The rate law for the reaction: A + B → D has been found to be: rate = (397 mol-2 L2 s-1) [ A]2[ B]. What is the rate of the reaction if the concentration of A is 0.0615 mol L-1 and the concentration of B is 0.583 mol L-1?

The Rate Law For The Reaction: A + B D Has Been Found To Be: Rate = (397 Mol-2 L2 S-1) [ A]2[ B]. What

Answers

Answer 1

The rate of a chemical reaction can be calculated using its rate law and the concentrations of its reactants. The rate of reaction is 7.64 x 10⁻⁵ mol L⁻¹ s⁻¹.

The rate law for the given reaction is given as:

rate = (397 mol⁻² L² s¹) [A]²[B]

where [A] and [B] are the concentrations of reactants A and B, respectively.

We are given the concentrations of A and B as 0.0615 mol L⁻¹ and 0.583 mol L⁻¹, respectively. We can substitute these values into the rate law and solve for the rate of the reaction:

rate = (397 mol⁻² L² s¹) (0.0615 mol L⁻¹)² (0.583 mol L⁻¹)

rate = 7.64 x 10⁻⁵ mol L⁻¹ s⁻¹

Therefore, the rate of the reaction is 7.64 x 10⁻⁵ mol L⁻¹ s⁻¹.

To know more about reaction please refer: https://brainly.com/question/29039149

#SPJ1


Related Questions

Predicting Products: Mg + K2SO4. (2 and 4 are coefficients)

Answers

The reaction between magnesium (Mg) and potassium sulfate (K2SO4) is a double displacement reaction that occurs in an aqueous solution. The products that will form depend on the solubility of the resulting compounds.

When Mg and K2SO4 react, magnesium sulfate (MgSO4) and potassium (K) will be produced. This is because the magnesium will displace the potassium ion in the potassium sulfate compound, resulting in the formation of magnesium sulfate and potassium metal.

The balanced chemical equation for this reaction is:

2Mg + K2SO4 → MgSO4 + 2K

It is important to note that this reaction will only occur if the magnesium is more reactive than the potassium in the solution. If the opposite were true, no reaction would occur.

To know more about double displacement reaction , visit:

https://brainly.com/question/29307794

#SPJ1


How many moles of argon are in 35.3 g of argon?

Answers

Answer: 0.883605 or 0.884

Explanation:

The molar mass of argon is equal to the average atomic mass given in the periodic table, 39.948 g/mol.

Use the molar mass as a conversion factor between mass and moles.

35.3 g×1 mol/39.948 g=0.884 mol

A 0.231 M solution of acetate has a pOH of 4.90. What is the Kb of acetate?

Answers

Explanation:

o solve this problem, we need to use the relation between pOH, pH, and the dissociation constant of the conjugate base of the weak acid, which is given by:

Kb = Kw / Ka

where Kb is the dissociation constant of the conjugate base, Ka is the dissociation constant of the weak acid, and Kw is the ion product constant of water, which is 1.0 x 10^-14 at 25°C.

First, we need to find the pH of the solution, since we know the pOH:

pH + pOH = 14

pH = 14 - 4.90 = 9.10

The weak acid in this case is the acetic acid (CH3COOH), which dissociates in water according to the equation:

CH3COOH + H2O ↔ CH3COO- + H3O+

The dissociation constant of acetic acid (Ka) is 1.8 x 10^-5 at 25°C. We can use this value and the relation between Ka and Kb to find Kb:

Kb = Kw / Ka = 1.0 x 10^-14 / 1.8 x 10^-5 = 5.56 x 10^-10

Therefore, the Kb of acetate is 5.56 x 10^-10.

Can you explain in detail how anion exchage occur in soil.

Answers

Answer:

With the adsorption of cations like zinc as Zn (OH)+ or ZnCl+ or both, the anion exchange is known to increase. The solid phase has an impact on the anions' concentration in the soil solution. Anions are negatively adsorbed as a result of the exchange complex's overall negative charge.

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas
that should bubble out of 1.2 L of water upon warming from 25 * C to 50°C. Assume that the water is
initially saturated with nitrogen and oxygen gas at 25 °C and a total pressure of 1.0 atm. Assume that the
gas bubbles out at a temperature of 50 °C. The solubility of oxygen gas at 50°C is 27.8 mg/L at an
oxygen pressure of 1.00 atm. The solubility of nitrogen gas at 50° C is 14.6 mg/L at a nitrogen pressure
of 1.00 atm. Assume that the air above the water contains an oxygen partial pressure of 0.21 atm and a
nitrogen partial pressure of 0.78 atm
Express your answer using two significant figures.

Answers

Answer:

1. Use Henry’s law to find the initial concentrations of oxygen and nitrogen gas in water at 25°C. Henry’s law states that the concentration of a gas in a liquid is proportional to the partial pressure of the gas above the liquid. The proportionality constant is called the Henry’s law constant and it depends on the temperature and the nature of the gas and the liquid. The formula for Henry’s law is:

C = kP

where C is the concentration of the gas in the liquid, k is the Henry’s law constant, and P is the partial pressure of the gas.

The solubilities given in the problem are actually the values of k for oxygen and nitrogen gas at 50°C. To find the values of k at 25°C, we need to use a table or a graph that shows how k changes with temperature.

Using this table, we can estimate that k for oxygen at 25°C is about 40 mg/L/atm and k for nitrogen at 25°C is about 20 mg/L/atm.

Now we can plug in the values of k and P to find C for oxygen and nitrogen at 25°C:

C_O2 = k_O2 * P_O2 = 40 mg/L/atm * 0.21 atm = 8.4 mg/L C_N2 = k_N2 * P_N2 = 20 mg/L/atm * 0.78 atm = 15.6 mg/L

2. Use the ideal gas law to find the initial moles of oxygen and nitrogen gas in water at 25°C. The ideal gas law states that the pressure, volume, temperature, and moles of a gas are related by the formula:

PV = nRT

where P is the pressure, V is the volume, n is the moles, R is the universal gas constant, and T is the temperature.

We can rearrange this formula to solve for n:

n = PV/RT

We know that P is 1 atm, V is 1.2 L, R is 0.0821 Latm/molK, and T is 298 K (25°C + 273). We can plug in these values to find n for oxygen and nitrogen:

n_O2 = PV/RT = (1 atm * 1.2 L) / (0.0821 Latm/molK * 298 K) = 0.049 mol n_N2 = PV/RT = (1 atm * 1.2 L) / (0.0821 Latm/molK * 298 K) = 0.049 mol

However, these are not the actual moles of oxygen and nitrogen gas in water, because some of them are dissolved in water. To find the moles of dissolved gas, we need to use the concentration and the volume of water:

n_dissolved_O2 = C_O2 * V = (8.4 mg/L) * (1.2 L) / (1000 mg/g) / (32 g/mol) = 0.00032 mol n_dissolved_N2 = C_N2 * V = (15.6 mg/L) * (1.2 L) / (1000 mg/g) / (28 g/mol) = 0.00067 mol

To find the moles of gas that are not dissolved, we need to subtract the moles of dissolved gas from the total moles:

n_undissolved_O2 = n_O2 - n_dissolved_O2 = 0.049 mol - 0.00032 mol = 0.049 mol n_undissolved_N2 = n_N2 - n_dissolved_N2 = 0.049 mol - 0.00067 mol = 0.048 mol

3. Use Henry’s law again to find the final concentrations of oxygen and nitrogen gas in water at 50°C. We can use the same formula as before, but with different values of k and P:

C_O2 = k_O2 * P_O2 = 27.8 mg/L/atm * 0.21 atm = 5.8 mg/L C_N2 = k_N2 * P_N2 = 14.6 mg/L/atm * 0.78 atm = 11.4 mg/L

4. Use the ideal gas law again to find the final moles of oxygen and nitrogen gas in water at 50°C. We can use the same formula as before, but with different values of V and T:

n_O2 = PV/RT = (1 atm * 1.2 L) / (0.0821 Latm/molK * 323 K) = 0.045 mol n_N2 = PV/RT = (1 atm * 1.2 L) / (0.0821 Latm/molK * 323 K) = 0.045 mol

However, these are not the actual moles of oxygen and nitrogen gas in water, because some of them are dissolved in water. To find the moles of dissolved gas, we need to use the concentration and the volume of water:

n_dissolved_O2 = C_O2 * V = (5.8 mg/L) * (1.2 L) / (1000 mg/g) / (32 g/mol) = 0.00022 mol n_dissolved_N2 = C_N2 * V = (11.4 mg/L) * (1.2 L) / (1000 mg/g) / (28 g/mol) = 0.00049 mol

To find the moles of gas that are not dissolved, we need to subtract the moles of dissolved gas from the total moles:

n_undissolved_O2 = n_O2 - n_dissolved_O2 = 0.045 mol - 0.00022 mol = 0.045 mol n_undissolved_N2 = n_N2 - n_dissolved_N2 = 0.045 mol - 0.00049 mol = 0.044 mol

5. Use the ideal gas law one more time to find the final volume of oxygen and nitrogen gas that bubbles out of water at 50°C. We can use the same formula as before, but with different values of n and P:

V_O2 = nRT/P = (0.045 mol * 0.0821 Latm/molK * 323 K) / (1 atm) = 1.20 L V_N2 = nRT/P = (0.044 mol * 0.0821 Latm/molK * 323 K) / (1 atm) = 1.17 L

6. Add the volumes of oxygen and nitrogen gas to get the total volume of gas that bubbles out of water:

V_total = V_O2 + V_N2 = 1.20 L + 1.17 L = 2.37 L

Therefore, the total volume of nitrogen and oxygen gas that should bubble out of 1.2 L of water upon warming from 25°C to 50°C is 2.4 L using two significant figures.

What Celsius temperature, T2 , is required to change the volume of the gas sample in Part A ( T1 = 19 ∘C , V1 = 1940 L ) to a volume of 3880 L ? Assume no change in pressure or the amount of gas in the balloon. Express your answer with the appropriate units.

Answers

T2 has a temperature of 58.6 °C in Celsius.

The International System of Units (SI) has two temperature scales: the Kelvin scale and the Celsius scale.In the Celsius scale, which was formerly known as the centigrade scale outside of Sweden, the degree Celsius is the unit of measurement for temperature. The ideal gas law, which asserts that PV = nRT, describes how a gas's temperature, pressure, and volume are related to one another.

Since the pressure and amount of gas in the balloon are assumed to be constant, we can rearrange the equation to solve for the temperature:

[tex]T2 = \frac{(PV1)}{(nRV2) }[/tex]

[tex]T2 =\frac{ (1 atm)(1940 L)}{(1 mol)(8.314 J/mol .K)(3880 L) }[/tex]

T2 = 58.6 ∘C

Therefore,The Celsius temperature, T2 is 58.6°C

learn more about ideal gas law Refer:brainly.com/question/28257995

#SPJ1

A sample of helium occupies a volume of 160cm3 at 100 KPa and 25°c. what volume will it occupy if the pressure is adjusted to 80 KPa and the temperature remains unchanged?​

Answers

Answer:

Explanation:Explore this page

About the gas laws calculator

This is an ideal gas law calculator which incorporates the Boyle's law , Charles's law, Avogadro's law and Gay Lussac's law into one easy to use tool you can use as a:

Boyle's Law-

[tex]\:\:\:\:\:\:\:\:\:\:\:\star\:\sf \underline{ P_1 \: V_1=P_2 \: V_2}\\[/tex]

(Pressure is inversely proportional to the volume)

Where-

[tex]\sf V_1[/tex] = Initial volume[tex]\sf V_2[/tex] = Final volume[tex]\sf P_1[/tex] = Initial pressure[tex]\sf P_2[/tex] = Final pressure

As per question, we are given that -

[tex]\sf V_1[/tex] = 160 cm³[tex]\sf P_1[/tex] = 100KPa[tex]\sf P_2[/tex] = 80KPa

Now that we have all the required values and we are asked to find out that volume which will be occupied if the pressure is adjusted to 80 KPa and the temperature remains unchanged. For that we can put the values and solve for the final volume of helium-

[tex]\:\:\:\:\:\:\:\:\:\:\:\:\:\:\:\star\:\sf \underline{ P_1 \: V_1=P_2 \: V_2}[/tex]

[tex]\:\:\:\: \:\:\:\:\:\:\longrightarrow \sf 100 \times 160 = 80 \times V_2\\[/tex]

[tex] \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf V_2 = \dfrac{100 \times 160}{80}\\[/tex]

[tex] \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf V_2 =100\times \cancel{\dfrac{ 160}{80}}\\[/tex]

[tex]\:\:\:\: \:\:\:\:\:\:\longrightarrow \sf V_2 = 100 \times 2\\[/tex]

[tex] \:\:\:\:\:\:\:\:\:\:\longrightarrow \sf \underline{V_2 = 200 \:cm^3 }\\[/tex]

Therefore, 200 cm³ will be occupied if the pressure is adjusted to 80 KPa and the temperature remains unchanged.

Explain which direction the molecules will move during diffusion.

Answers

Answer: During diffusion, molecules flow down their concentration gradient.

Explanation:

They're flowing from an area of high concentration to an area of low concentration. Molecules flowing down a concentration gradient is a natural process and does not require energy.


How many grams of hydrogen chloride can be produced from 0.490 g of hydrogen and 50.0 g chlorine? The balanced equation is:
H₂(g) + Cl₂(g) → 2 HCI(g)


Answers

Hydrogen is the limiting reactant and chlorine is in excess since there is less hydrogen chloride that can be made from it (4.56 g) than there is chlorine (51.7 g) that can. As a result, 4.56 g of hydrogen chloride can be generated.

From 0.490 g of hydrogen and 50.0 g of chlorine, how many grams of hydrogen chloride may be produced?

Let's first determine how much hydrogen chloride can be made from 0.490 g of hydrogen. We'll convert from moles of hydrogen to moles of hydrogen chloride using the balanced chemical equation:

1 mole of H2 yields 2 moles of HCl.

4.56 g HCl is equal to 0.490 g H2 times (1 mole H2 / 2.016 g H2), 2 moles HCl to 1 mole H2, and 36.46 g HCl to 1 mole H2.

The result is that 4.56 g of hydrogen chloride may be made from 0.490 g of hydrogen.

Let's now determine how much hydrogen chloride 50 g of chlorine can yield:

Cl2 creates 2 moles of HCl from 1 mole.

50.0 g Cl2 multiplied by (1 mole Cl2/70.90 g Cl2), (2 moles HCl/Mole Cl2), and (36.46 g/Mole Cl2) results in 51.7 g HCl.

The result is that 50.0 g of chlorine can make 51.7 g of hydrogen chloride.

To know more about chlorine gas visit:

https://brainly.com/question/29577369

#SPJ1

The carbon cycle most affects which factor? Responses erosion erosion air quality air quality living organisms living organisms weather conditions

Answers

The carbon cycle most affects living organisms. Carbon is an essential element for life, as it is a major component of organic molecules such as carbohydrates, proteins, and fats.

The carbon cycle describes the movement of carbon between living and non-living components of the Earth's biosphere, including the atmosphere, oceans, and land. Through processes such as photosynthesis, respiration, decomposition, and combustion, carbon is exchanged between organisms and the environment, influencing the growth and survival of living organisms.

To know more about combustion please refer:

https://brainly.com/question/31123826

#SPJ1

I NEED THIS DONE TODAY !!!!!!!!Electromagnetic Spectrum Lab Report
Destructions: In this virtual lab, you will use a virtual spectrometer to analyze astronomical
bodies in space. Record your hypothesis and spectrometric recular in the lab report below. You
will submit your completed report to your butructor.
Name and Title:
Include your name, instru
1
and name of lab.
Objectives (1):
In your own words, what is the purpose of this lab?
Hypothesis:
In this section, please include the predictions you developed during your lab activity. These
statements reflect your predicted outcomes for the experiment.
Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here.
However, you should note if you experienced any errors or other factors that might affect your
outcome. Using your summary questions at the end of your virtual lab activity, please clearly
define the dependent and independent variables of the experiment.
Data:
Record the elements present in each unknown astronomical object. Be sure to indicate "yes" or
"no" for each element.
Hydrogen Helium Lithium Sodiam Carbon
Moon One
Moon Two
Planet One
Planet Two
Nitrogen
Conclusion:
Your conclusion will inchade a summary of the lab results and an interpretation of the results.
Please answer all questions in complete sentences using your own words.
1. Using two to three sentences, summarize what you investigated and observed in this lab
2. Astronomers use a wide variety of technology to explore space and the electromagnetic
spectrum; why do you believe it is essential to use many types of equipment when
studying space?
3. If carbon was the most common element found in the moons and planets, what element is
missing that would make them splat to Earth? Explain why. (Hint: Think about the
carbon cycle)
4.
We know that the electromagnetic spectrum uses wavelengths and frequencies to
determine a lot about outer space. How does it help us find out the make-up of stars?
5. Why might it be useful to determine the elements that a planet or moon is made up of?
PLEASE MAKE SURE YOU ANSWER THE HYPOTHESIS AND PROCEDURE QUESTION!!!!

Answers

Below contains the complete lab report on electromagnetic spectrum

The Lab Report

Name: [Your Name]

Title: Electromagnetic Spectrum Lab Report

Instructor: [Instructor's Name]

Objectives:

The purpose of this lab is to analyze the elemental composition of different astronomical bodies using a virtual spectrometer and understand the importance of the electromagnetic spectrum in astronomical research.

Hypothesis:

I predict that the moons and planets will have varying compositions of elements, with hydrogen and helium being more common in gaseous bodies and heavier elements like carbon and nitrogen more common in rocky bodies.

Dependent variable: Presence of elements in astronomical bodies

Independent variable: Astronomical bodies (Moon One, Moon Two, Planet One, Planet Two)

Data:

[Please input your data for each object as per your virtual lab results]

Conclusion:

In this lab, I investigated the elemental composition of four different astronomical bodies using a virtual spectrometer and observed the presence or absence of various elements.

It is essential to use many types of equipment when studying space because different instruments can detect and analyze different aspects of the electromagnetic spectrum, providing a comprehensive understanding of the universe.

To make these moons and planets similar to Earth, oxygen would need to be present as it is a vital component of the carbon cycle and essential for life as we know it.

The electromagnetic spectrum helps us find out the makeup of stars by analyzing the emitted light, which contains information about the elements and their abundance within the star.

Determining the elements that a planet or moon is made up of helps us understand their formation, potential for life, and possible resources for future exploration or colonization.

Read more about Electromagnetic Spectrum Lab Report here:

https://brainly.com/question/30699255

#SPJ1

draw and explain the energy profile diagram along with various possible conformations of cyclohexane

Answers

Answer:

we're is the diagram I don't see it

For each of the following equilibria, write the equilibrium constant expression for Kc.


1. BaSO4(s) <---->Ba2+(aq) + SO42-(aq)

2. CH3COOH (aq) + H2O (l) <--->CH3COO- (aq) + H3O+ (aq)

Answers

Equilibria are chemical reactions that happen with a change in the concentration of the reactants or products. If the forward reaction is favored, a greater concentration of the product will be formed than the reactant(s), and the reaction is said to be favored. If the reverse reaction is favored, a greater concentration of the reactant(s) will be formed and thus the reaction is said to be favored. An equilibrium constant (constant K), is a number that describes the ratio of products to reactants at an equilibrium. K is also referred to as the equilibrium coefficient.

Answer:

1. Kc = [Ba2+][SO42-]

2. Kc = [CH3COO-][H3O+]/[CH3COOH]

Explanation:

The equilibrium constant expression for Kc is the product of the concentrations of the products raised to their stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients.

1. For the first equilibrium, BaSO4(s) <---->Ba2+(aq) + SO42-(aq), the equilibrium constant expression for Kc is: Kc = [Ba2+][SO42-].

2. For the second equilibrium, CH3COOH (aq) + H2O (l) <—>CH3COO- (aq) + H3O+ (aq), the equilibrium constant expression for Kc is: Kc = [CH3COO-][H3O+]/[CH3COOH].

Note that the concentration of water is not included in the expression because it is a pure liquid and its concentration is considered constant.

calculate the area of a book which has length 30cm and breadth 20cm

Answers

30cm*20cm= 600cm^2
You have to multiply the length(30cm) times the breadth(20cm), in order to get your answer(600cm^2).
Area = length by width(breadth)
Area = 30cm x 20cm
Area = 600 cm^2

In this experiment, the pH curve is obtained for titration of a weak acid with a strong base. Sketch the pH curve expected for titration of a weak base with a strong acid.

Answers

When a weak base is titrated with a strong acid, the pH curve is expected to be the inverse of the curve obtained during the titration of a weak acid with a strong base.

Initially, the solution will have a high pH, which will gradually decrease as the acid is added. As the equivalence point is approached, the pH will rapidly decrease until it reaches a minimum value. At the equivalence point, the pH will be equal to 7. After the equivalence point, the pH will gradually increase as the excess acid is titrated by the base until it reaches a final high pH value.

Therefore, the pH curve expected for titration of a weak base with a strong acid will have a shape similar to the curve obtained for titration of a weak acid with a strong base, but inverted along the y-axis.

The pH curve  for titration of a weak base with a strong acid is attached below.

What is base?

According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.

Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.

They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.

Learn more about base,here:

https://brainly.com/question/13773045

#SPJ2

Kelly wants to build a small koi fish pond in her back yard what natural material should she pine her pond with to make sure that no water leaks out the pond through gravitational water flow

Answers

Kelly should line her koi fish pond with clay to ensure that no water leaks out through gravitational water flow.

Building a koi fish pond

Clay is a natural material that is used widely in pond and water feature construction. It has excellent water-holding properties and is able to form a waterproof seal when properly installed. Clay liners can be formed using either bentonite clay or kaolin clay, both of which are readily available and relatively inexpensive.

When installing a clay liner, it is important to prepare the pond base by removing any sharp or protruding objects, compacting the soil, and smoothing out any irregularities. The clay liner can then be laid down in layers and compacted to ensure a uniform thickness and a solid seal.

Overall, using a clay liner is an effective way to prevent water from leaking out of a koi fish pond and to maintain a healthy environment for the fish.

More on fish ponds can be found here: https://brainly.com/question/29276248

#SPJ1

What is the normality of the solution that results when 4.0g of Al(NO3)3 (MW = 213.0) is dissolved in enough water to give 250mL of solution? What is the molarity of the solution?

Answers

the normality of the solution that results when 4.0g of Al(NO₃)₃ (MW = 213.0) is dissolved in enough water to give 250mL of solution the molarity of the solution is 0.0751 M.

To calculate the normality and molarity of the solution, we need to know the number of moles of Al(NO₃)₃ in the solution.

The number of moles can be calculated as:

moles = mass / molar mass

where mass is the mass of Al(NO₃)₃ and molar mass is the molecular weight of Al(NO₃)₃.

Substituting the given values, we get:

moles = 4.0 g / 213.0 g/mol = 0.01878 mol

The volume of the solution is given as 250 mL, which is equivalent to 0.25 L.

The normality of the solution is defined as the number of equivalents of solute per liter of solution. For Al(NO₃)₃, each mole of the compound produces 3 moles of ions, so the number of equivalents of Al(NO₃)₃ is:

equivalents = moles x 3

Substituting the value of moles, we get:

equivalents = 0.01878 mol x 3 = 0.05634 eq

The normality can now be calculated as:

normality = equivalents / volume

Substituting the given values, we get:

normality = 0.05634 eq / 0.25 L = 0.225 N

Therefore, the normality of the solution is 0.225 N.

The molarity of the solution is defined as the number of moles of solute per liter of solution. The number of moles of Al(NO₃)₃ in 250 mL of solution is the same as the number of moles in 1 L of solution, which is 0.01878 mol. Therefore, the molarity of the solution is:

molarity = moles / volume

Substituting the given values, we get:

molarity = 0.01878 mol / 0.25 L = 0.0751 M

Learn more about solution here:

https://brainly.com/question/30665317

#SPJ1

Q. The order of acidic strength of hydrogen halides is: acid HF < HCl CH-1 > Br¹>1-1 (b) F-1 < CH-1 < Br¹ Br¹> -1 (d) F-1> CI-1 < Br¹> -1. Hint: A strong acid has a weak conjugate base and vice versa.​

Answers

Answer:

im just here grabbing points dont take me as rude or anything

Explanation:

yours appreciatively bye

What are the carbohydrates’ that give positive result with Seliwanoff ? why?

Answers

Answer:

Fructose and sucrose

Explanation:

Sucrose gives a positive test as it is a disaccharide consorting of fructose and glucose

You are trying to increase the rate at which you can dissolve a large amount of sodium chloride into water to make a solution to use in lab.
Which of the following would be the BEST method of doing this?

A. stir and heat the mixture and use small pieces of sodium chloride

B. heat the water and use a large piece of sodium chloride

C. stir and heat the mixture and use a large piece of sodium chloride

D. heat the water and use small pieces of sodium chloride

Answers

The answer would be “A. Stirring and heating the mixture”, this will increase the kinetic energy of the water molecules.

It took 4.5 minutes for 1.0 L helium to effuse through a porous
barrier. How long will it take for 1.0 L Cl 2 gas to effuse under
identical conditions?

Answers

It took 19 minutes for 1.0L Cl₂ gas to effuse under identical conditions.

How to calculate the time required to effuse a gas under identical conditions?

1.0 L He = 4.5 min

1.0 L Cl₂ = x min

1.0 L He = 4.5 min = 0.22[tex]\frac{L}{min}[/tex]

Now, find the rate of Cl₂ using the molar mass of Cl₂ divided by the molar mass of He:   [tex]\frac{0.22}{xCl2}[/tex]   = 0.52 [tex]\frac{L}{min}[/tex]

Now, we need to solve for the time Cl₂ to effuse through a porous barrier, by setting it up as a proportion;

[tex]\frac{0.52L}{1 min}[/tex]   =  [tex]\frac{1.0L}{x min}[/tex]

   = 19 minutes.

Hence, It tooks 19 minutes for 1.0L Cl₂ gas to effuse under identical conditions.

Learn more about gas here:

https://brainly.com/question/3637358

#SPJ1

Select the two true statements about natural selection. Natural selection makes less advantageous variations become more advantageous over many generations. A population's environment affects the outcome of natural selection. Natural selection always makes a population gain new advantageous variations. Natural selection can change which variations are more common in a population over time. Submit

Answers

Answer:

The two true statements about natural selection are:

A population's environment affects the outcome of natural selection.

Natural selection can change which variations are more common in a population over time.

Natural selection acts on the existing variations within a population and favors those that confer a survival or reproductive advantage in a particular environment. Over time, the advantageous variations become more prevalent, and less advantageous ones may become less common or disappear from the population. However, natural selection does not necessarily create new variations; rather, it acts on the genetic variation that already exists within a population.

3) The volume of ammonia produced when 12g of Hydrogen combine with excess nitrogen.

Answers

Answer:

The balanced chemical reaction to form ammonia is-

N2 +3H2->2NH3

From the above reaction we can say 3 moles of hydrogen gas(h2) are required to produce 2 moles of ammonia (NH3).

To find the amount of ammonia produced when 12g of hydrogen reacts with excess nitrogen, we need to first convert the mass of hydrogen to moles using its molar mass. The molar mass of hydrogen is 1.008 g/mol, so:

12 g H2 × (1 mol H2 / 1.008 g H2) = 11.905 mol H2

Since the nitrogen is in excess, all 11.905 moles of hydrogen will react. This will produce:

2 mol NH3 / 3 mol H2 × 11.905 mol H2 = 7.937 mol NH3

Finally, we can convert the moles of ammonia to volume using the ideal gas law. Assuming standard temperature and pressure (STP) of 0°C and 1 atm, respectively, the molar volume of an ideal gas is 22.4 L/mol. Therefore:

7.937 mol NH3 × 22.4 L/mol = 177.8 L NH3

So, the volume of ammonia produced when 12g of hydrogen combines with excess nitrogen is 177.8 L.

What is the pH of solution containing 2.3x10^-² mol/l of H* ions?​

Answers

Answer:

4.25^²

Explanation:

pH H*is the same as 4.25^²

CAN SOMEONE HELP WITH THIS QUESTION?✨

Answers

Fe²⁺ is the reducing agent in this reaction.

In the given chemical reaction:

[tex]Cr_2O_7^{2-} + 6Fe_2+ + 14H^+ -- > 2Cr_3+ + 6Fe_3+ + 7H_2O[/tex]

We can see that Fe²⁺ is being oxidized to Fe³⁺ as it loses one electron and its oxidation state increases from +2 to +3. This means that  Fe²⁺ is giving away electrons, which makes it the species that is being oxidized or the reducing agent.

Therefore,  Fe²⁺ is the reducing agent in this reaction.

There are species in a chemical reaction that experience changes in their oxidation states, meaning they either acquire or lose electrons. Because it reduces another species by transferring electrons to it, the species that sheds electrons is known as the reducing agent.

The species that acquires electrons is known as the oxidizing agent because, by taking electrons from another species, it oxidizes that species.

learn more about reducing agent here

https://brainly.com/question/12549467

#SPJ1

Based on molecular orbital theory, the only molecule in the list below that has unpaired electrons is ________.
Li2
N2
C2
F2
O2

Answers

The molecule that has unpaired electrons based on molecular orbital theory is O2.

What is Electron?

An electron is a subatomic particle with a negative charge that orbits the nucleus of an atom. Electrons have a mass of approximately 9.11 x[tex]10^{-31}[/tex]kilograms and a fundamental unit of charge, which is equal to -1.602 x [tex]10^{-19}[/tex]coulombs. Electrons are involved in chemical reactions and determine the chemical and physical properties of atoms and molecules. They are also involved in the production of electricity and are the basis of modern electronics.

Molecular orbital theory is a model used to explain the bonding of molecules. According to this theory, molecular orbitals are formed by the linear combination of atomic orbitals of the constituent atoms. These molecular orbitals can be bonding or antibonding in nature, and the number of electrons in the bonding and antibonding orbitals determines the stability and reactivity of the molecule.

Learn more about Electron from the given link

https://brainly.com/question/860094

#SPJ1

what are minerals?
explained ​

Answers

A mineral is a substance such as tin, salt, or sulphur that is formed naturally in rocks and in the earth. Minerals are additionally observed in small portions in food and drink.

Why are minerals important?

Minerals are integral for three essential reasons: building robust bones and teeth. controlling physique fluids inside and outdoor cells. turning the meals you devour into energy.

Why are minerals so important?

Minerals are necessary for your body to remain healthy. Your physique uses minerals for many one of a kind jobs, which include maintaining your bones, muscles, heart, and talent working properly. Minerals are additionally necessary for making enzymes and hormones. There are two types of minerals: macrominerals and hint minerals.

Learn more about minerals here;

https://brainly.com/question/15844293

#SPJ1

Consider the following intermediate chemical equations.

2 equations: first: upper C (s) plus one-half upper O subscript 2 (g) right arrow upper C upper O (g). Second: upper C upper O (g) plus one-half upper O subscript 2 (g) right arrow upper C upper O subscript 2 (g).

When you form the final chemical equation, what should you do with CO?

Answers

The CO gas produced in the first equation is used in the second equation to produce CO2 in the final equation.

In the intermediate equations, solid carbon (C) and molecular oxygen (O2) are transformed into gaseous carbon monoxide (CO), which is then reacted with more oxygen to produce carbon dioxide (CO2).

The final chemical equation can be created by combining the intermediate equations and cancelling out the intermediate reactant and product (CO and O2) to obtain the overall balanced equation for the reaction:

C(g) + O2(s) = CO2 (g)

Thus, the CO generated in the first equation is consumed in the second equation and does not show up in the third and final equation. The two intermediate reactions' combined outcome is represented by the final equation, which only includes the reactants (C and O2) and product (CO2).

Learn more about molecular oxygen here:

https://brainly.com/question/11587330

#SPJ1

Question 1
Imagine yourself in the shoes of Dimitri Mendeleev. You are provided with two sets of cards that list properties of various
elements. These cards resemble the cards used by Mendeleev when he grouped elements. One set of cards lists the names
of known elements and their properties, while the other set of cards lists the properties of a few unknown elements. These
sets are shown below.
Known Elements Set
K
Physical State: solid
Density: 0.86 g/cm³
Conductivity: good
Physical State: solid
Density: 4.93 g/cm³
Conductivity: very poor
Solubility (H₂O): reacts rapidly Solubility (H₂O): negligible
Melting Point: 63°C
Melting Point: 113.5°C
Ge
Physical State: solid
Density: 5.32 g/cm³
Conductivity: fair
Solubility (H₂O): none
Melting Point: 937°C
CI
Ba
Physical State: solid
Density: 3.6 g/cm³
Conductivity: good
Au
Rb
Physical State: solid
Density: 19.3 g/cm³
Conductivity: excellent
Solubility (H₂O): None
Melting Point: 1064°℃
Physical State: gas
Density: 0.00178 g/cm³
Conductivity: none
Solubility (H₂O): reacts strongly Solubility (H₂O): negligible
Melting Point: 710°C
Melting Point: -189.2°C
Ag
Ar
A

Answers

Unknown Elements Set
Element X
Physical State: solid
Density: 7.2 g/cm³
Conductivity: very poor
Solubility (H₂O): insoluble
Melting Point: 182°C
Element Y
Physical State: gas
Density: 0.0012 g/cm³
Conductivity: good
Solubility (H₂O): reacts vigorously
Melting Point: -218.79°C

As Dimitri Mendeleev, I would first examine the known elements set of cards and try to identify any patterns or trends in the properties of the elements. Mendeleev noticed that certain properties of the elements repeated after a certain number of elements, which led him to develop the periodic table.

Next, I would examine the unknown elements set of cards and try to place them in the periodic table based on their properties. For example, Element X has a high density and a high melting point, which suggests that it may be a transition metal. Its poor conductivity indicates that it is not a good conductor of electricity, which is consistent with the properties of most transition metals. Based on these properties, I might place Element X in the transition metal group of the periodic table.

Element Y is a gas with a low density and a low melting point. Its good conductivity suggests that it may be a metal or a metalloid. Its reactivity with water suggests that it may be an alkali metal or an alkaline earth metal. Based on these properties, I might place Element Y in the alkali metal or alkaline earth metal group of the periodic table.

By organizing the elements in this way, I would be able to predict the properties of other unknown elements and potentially discover new elements based on their predicted properties.

Under certain conditions the decomposition of ammonia on a metal surface gives the following data.

[NH3] (M) 3.0 ✕ 10−3 6.0 ✕ 10−3 9.0 ✕ 10−3

Rate (mol/L/h) 1.5 ✕ 10−6 1.5 ✕ 10−6 1.5 ✕ 10−6

(a)

Determine the rate equation for this reaction. (Rate expressions take the general form: rate = k . [A]a . [B]b.)
(b)
Determine the rate constant (in mol/L/h) using data from the first column.
WebAssign will check your answer for the correct number of significant figures.
mol/L/h
(c)
Determine the overall order for this reaction.

Answers

The given ammonia decomposition reaction on a metal surface is zero-order with respect to ammonia. The rate constant is [tex]1.5 × 10^-6[/tex] mol/L/h and the overall reaction order is zero.

(a) Since the rate remains constant while the concentration of ammonia changes, we can conclude that the reaction is zero-order with respect to ammonia. Therefore, the rate equation is:

rate = [tex]k[NH3]^0[/tex] = k

(b) Using data from the first column, we have:

rate = [tex]k[NH3]^0[/tex]

[tex]1.5 × 10^-6 mol/L/h = k(3.0 × 10^-3 M)^0[/tex]

k =[tex]1.5 × 10^-6[/tex] mol/L/h

(c) The overall order of the reaction is the sum of the orders with respect to each reactant. Since the reaction is zero-order with respect to ammonia, the overall order is zero.

Learn more about ammonia here:

https://brainly.com/question/14672082

#SPJ1

Other Questions
Which three functions does the Microsoft Power Platform Command Line Interface (CLI) provide when developing Power Apps component framework controls? Each correct answer presents a complete solution. a multinational corporation, with operations in dozens of different countries a. must effectively manage foreign exchange risk b. can ignore foreign exchange risk since it is diversified c. will pay taxes in only its home county d. none of the options why would you exclude as controls in a case control study of gynelogic cancer who cannot develop disease People who do vote but do not cast votes for every candidate on the ballot Jordan wants a collapsible puppy pen that gives his puppy at least 35 square feet of area and at Least 10 feet of diagonal length. Should Jordan buy the pen shown? Explain. reward power leads to better performance as long as an employee sees a clear and strong link between performance and rewards. group of answer choices true false 35 ptComplete the following sentences.Most government employees will contribute to a , whereas most industry employees will contribute to a . can open an individual retirement account. Please Help Me Answer These Send Halp What is the interest rate if the investment is $1,000 at 16% simple interest for 20 yrs? Can someone pls help me solve this!! Will give brainliest!! if I said that angle 1 in the diagram below was 122 degrees, how can the angle relationships be used to determine the rest of the angle measures. Include how you can use these angle relationships to prove that lines are parallel.(add any theorems you would use) 8. We each picked a _______________ of grapes from the vine. (20 points) suppose we have two implementations of the same instruction set architecture. computer a has a clock cycle time of 200 ps and a cpi of 2 for some program, and computer b has a clock cycle time of 500 ps and a cpi of 1.25 for the same program. which computer is faster for this program, and by how much? the table shows jennifer's marginal utility from tea and shortbread. jennifer has $10.00 to spend each day on tea and shortbread. the price of tea is $2.00 a cup and the price of shortbread is $1.00 a piece. when jennifer maximizes her total utility, how many pieces of shortbread does she buy each day and what is her marginal utility per dollar from shortbread? . experience has shown that attenuated vaccines tend to be more effective than inactivated vaccines. why? diffraction grating with 15000 lines per centimeter are readily available. suppose you have one, and you send a beam of white light through it to a screen 2.5 m away. (a) find the angles for the first-order diffraction of the shortest and longest wavelenths of a visible light (400 and 750 nm, respectively). (b)what is the distance between the ends of the rainbow of visible light produced on the screen for first-order interference? areawhich criteria must be met in order for a promised good or service to be considered distinct? a.distinct within the context of the contract b.separately identifiable and distinct within the context of the contract c.capable of being distinct d.capable of being distinct and distinct within the context of the contract Assume all lines that appear parallel, are parallel. Solve for y. eduardo's football team is playing the leading team in their division. they have to win this game to qualify for the regional championship. eduardo is stressed because of the extreme importance of this game. this kind of stress is select one: a. chronic stress. b. distress. c. eustress. d. acute stress. which of the following is true about emergency contraceptive pills? group of answer choices they are 100 percent effective if taken 2 to 5 days after unprotected intercourse. multiple brands are available over-the-counter with no age restrictions. they will cause an abortion if the woman is already pregnant. all brands require a prescription and are subject to age restrictions. Calculate the surface area of this right triangular prism.