The appearance of pink color in the phenol red test and the presence of flame and "pop" sound in the splint test indicate the production of NaOH and H2 gas, respectively, in the reaction between zinc, HCl, and NaOH.
How does sodium hydroxide and hydrogen gas appear from the phenol red test and the splint test?Sodium hydroxide (NaOH) and hydrogen gas (H2) can be produced by the reaction between zinc and hydrochloric acid (HCl) in the presence of sodium hydroxide. This reaction can be tested using the phenol red test and the splint test.
In the phenol red test, phenol red indicator is added to the reaction mixture. Phenol red is a pH indicator that changes color depending on the acidity or basicity of the solution. When NaOH is added to the reaction mixture, it neutralizes the acid (HCl) and increases the pH of the solution. This causes phenol red to change from yellow (acidic) to pink (basic). The appearance of pink color indicates the presence of NaOH.
In the splint test, a lighted splint is brought near the reaction mixture. When H2 gas is produced in the reaction, it can be tested using the splint test. H2 is a highly flammable gas that reacts with oxygen (O2) to produce water (H2O) vapor. When a lighted splint is brought near the reaction mixture, it can ignite the H2 gas, producing a "pop" sound and a small flame. This appearance of flame and "pop" sound confirms the presence of H2 gas.
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What is the pH 0f 10^-4 moles of HCl
The answer for this question would be pH=3.0
Hope this helps :)
pH of HCl solution is 4.
What is pH?pH may be defined as a measure of free acidity.
More precisely, pH is defined as the negative log of the hydrogen ion concentration.
pH = - log [H⁺]
The range of pH extends from zero to 14.
A pH value of 7 is neutral, because pure water has a pH value of exactly 7. Values lower than 7 are acidic; values greater than 7 are basic or alkaline.
Given,
Moles of HCl = 10⁻⁴
We know that, pH = - log [H⁺]
pH = - log (10⁻⁴)
pH = 4
Therefore, H⁺ concentration in a solution with a pH of 3.75 is 1.7 × 10⁻⁴
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m = 108.75 q
volume = 75 ml
D =
What is the density
The density of a substance is its mass divided by volume. The density of the substance with a mass of 108.75 g and volume of 75 ml is 1.45 g/ml.
What is density ?The density of a substance is the measure of its mass per unit volume. Density describes how closely its particles are packed. The density of a substance depends on the bond type, molecular weight, temperature and pressure as well.
The floating property of a substance on a fluid depends on its density. If it has less density than the fluid it will float on it.
Given,
the mass of the object m = 108.75 g
volume = 75 ml
density = mass/ volume
d = 108.75 g /75 ml
= 1.45 g/ml.
Therefore, the density of the substance with the mass of 108.75 g and 75 ml volume is 1.45 g/ml.
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how would i solve this and what would the answer be?
The mass of Fe2S3 formed would be 12.0 g
The limiting reactant is iron (Fe)
The percent yield of iron (III) sulfide would be 108.4%
Stoichiometric problemFe + S -> FeS
From the equation, we see that one mole of Fe reacts with one mole of S to produce one mole of FeS. To determine the mass of FeS that can be formed, we need to determine which reactant is limiting and which is in excess.
Number of moles of Fe = mass / molar mass = 7.62 g / 55.845 g/mol = 0.136 moles
Number of moles of S = mass / molar mass = 8.67 g / 32.06 g/mol = 0.27 moles
We see that Fe is limiting because there are fewer moles of Fe than S. The stoichiometry of the reaction tells us that one mole of Fe produces one mole of FeS.
The mass of FeS that can be formed is:
mass = number of moles × molar mass
mass = 0.136 moles × 87.91 g/mol (molar mass of FeS)
mass = 12.0 g
percent yield = actual yield / theoretical yield × 100%
percent yield = 13.01 g / 12.0 g × 100%
percent yield = 108.4%
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3. Use the following masses of reactants and products to write balanced symbol equations.
a) 4.40 g of propane (C3H8) reacts with 16.0 g of oxygen to produce 13.2 g of carbon dioxide and 7.20 g of water.
b) 46.0 g of ethanol (C2H5OH) reacts with 112.0 g of oxygen to produce 88.0 g of carbon dioxide and 54.0 g of water.
c) 79.2 g of C14H30 is cracked to produce 40.0 g of C7H16, 17.6 g of C3H8 and 22.4 g of C₂H4.
Using the masses of reactants and products the balanced chemical equations are:
a)C₃H₈ + 5O₂ ⇒ 3CO₂ + 4H₂O
b) C₂H₅OH + 3O₂ ⇒ 2CO₂ + 3H₂O
c) C₁₄H₃₀ ⇒ C₇H₁₆ + C₃H₈ + 2C₂H₄(cracking)
What is balanced chemical equation?Equations are balanced when they have the same number of each element on both the reactant and product sides. Equations need to be balanced in order to express the conservation of mass rule appropriately.
To balance chemical equations, stoichiometric coefficients for the reactants and products are necessary. Because a chemical equation must adhere to the rules of conservation of mass and constant proportions, the reactant and product sides of the equation must have an equal number of atoms of each element.
What is cracking?Long chain hydrocarbons, also known as kerogens, are complex chemical molecules that can be broken down into lighter, simpler molecules by a process called cracking. It results from the dissolution of carbon-carbon bonds. The presence of a catalyst and temperature are two elements that have a significant impact on the catalyst rate.
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Over the years, land used for grain production in this village has been subjected to aggressive farming practices such as over-watering and plowing. How have these activities most likely affected the land?
ANSWER PLS
Over-watering and aggressive plowing can have a variety of negative effects on the land used for crop production.
How are these activities likely to have impacted the land?
Some potential consequences of these practices include:
Soil erosion: Over-watering can cause soil erosion, which occurs when water runs off the land too quickly and carries soil particles with it. Aggressive plowing can also contribute to soil erosion by disturbing the soil structure and making it more susceptible to erosion.Soil compaction: Aggressive plowing can compact the soil, making it more difficult for plants to grow and for water and nutrients to penetrate the soil.Soil nutrient depletion: Over-watering can leach nutrients out of the soil, which can make it more difficult for plants to grow. Aggressive plowing can also contribute to soil nutrient depletion by disturbing the soil structure and breaking down organic matter.Reduced biodiversity: Over-watering and aggressive plowing can reduce biodiversity by destroying habitats and reducing the number of beneficial microorganisms and insects in the soil.Overall, these activities can have a negative impact on the health of the land and reduce its productivity over time. To mitigate these effects, it may be necessary to adopt more sustainable farming practices, such as conservation tillage and crop rotation, that help to preserve the health of the soil and maintain its productivity.
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A solution is prepared by adding 750.0 mL of 4.00 x 10^-33 M Ce(NO3)3 to 300.0 mL of 2.00 x 10^-2 M KIO3. Will Ce(IO3)3 (Ksp = 1.9 × 10^-10) precipitate from this solution?
Ce(IO3)3 will not precipitate from the solution.
Solution explained.
To determine if Ce(IO3)3 will precipitate from the solution, we need to calculate the concentration of Ce3+ and IO3- ions in the solution, and then use the solubility product constant (Ksp) to determine if a precipitate will form.
First, let's calculate the number of moles of Ce(NO3)3 added to the solution:
nCe(NO3)3 = (750.0 mL) (4.00 x 10^-33 mol/L) = 3.00 x 10^-30 mol Ce(NO3)3
Next, let's calculate the number of moles of KIO3 in the solution:
nKIO3 = (300.0 mL) (2.00 x 10^-2 mol/L) = 6.00 x 10^-3 mol KIO3
Since KIO3 is a strong electrolyte, it will dissociate completely in solution, giving us the same number of moles of IO3- ions:
nIO3- = 6.00 x 10^-3 mol
Since Ce(NO3)3 is also a strong electrolyte, it will dissociate completely to give us 3 times the number of moles of Ce3+ ions:
nCe3+ = 3.00 x 10^-30 mol x 3 = 9.00 x 10^-30 mol
Now, let's calculate the concentration of Ce3+ ions:
[Ce3+] = (9.00 x 10^-30 mol) / (1050.0 mL) = 8.57 x 10^-34 M
Finally, we can calculate the ion product (IP) of Ce(IO3)3:
IP = [Ce3+] [IO3-]^3 = (8.57 x 10^-34)^1 (6.00 x 10^-3)^3 = 7.34 x 10^-41
Comparing this value to the Ksp of Ce(IO3)3 (1.9 × 10^-10), we see that IP << Ksp.
Therefore, Ce(IO3)3 will not precipitate from the solution, and the solution will remain homogeneous.
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A 475 mg sample of the weak monoprotic acid dimethylglycine, N(CH3)2CH2COOH, is dissolved in some water. What is the minimum volume, in mL, of a 0. 100 M calcium hydroxide solution required to neutralize all of the acid?
The minimum volume of a 0.100 M calcium hydroxide solution required to neutralize all of the dimethylglycine is 41.2 mL.
The balanced chemical equation for the reaction between dimethylglycine and calcium hydroxide is:
N(CH3)2CH2COOH + Ca(OH)2 → Ca(N(CH3)2CH2COO)2 + 2H2O
From the equation, we can see that 1 mole of dimethylglycine reacts with 1 mole of calcium hydroxide. We can use this information to calculate the amount of calcium hydroxide required to neutralize the acid.
First, we need to determine the number of moles of dimethylglycine in the sample:
molar mass of dimethylglycine = 115.13 g/mol
number of moles = 475 mg / 1000 mg/g / 115.13 g/mol = 0.00412 mol
Since 1 mole of dimethylglycine reacts with 1 mole of calcium hydroxide, we need 0.00412 mol of calcium hydroxide to neutralize the acid.
Finally, we can use the molarity of the calcium hydroxide solution to determine the volume required:
moles of Ca(OH)2 = 0.00412 mol
volume of Ca(OH)2 solution = moles / molarity = 0.00412 mol / 0.100 mol/L = 0.0412 L
Converting this to milliliters:
volume of Ca(OH)2 solution = 41.2 mL
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If the Antarctic plate is estimated to move 2.05 cm per year, how long did it take for the plate to move from point A to point B?
Assume that, the distance between A to B is 10 cm. Then the plate is moving 2.05 cm per year. Then it will take about 5 years to move a distance of 10 cm.
What is Antarctic plate movement ?The continent of Antarctica, the Kerguelen Plateau, and a few isolated islands in the Southern Ocean and other nearby oceans are all part of the tectonic plate known as the Antarctic Plate.
The Antarctic plate started migrating the continent of Antarctica south to its present remote location when it split from Gondwana which caused the continent to have a considerably colder climate. Extensional mid-ocean ridge systems almost fully surround the Antarctic Plate.
It is given that the plate moves a distance of 2.05 cm per year. Then if the distance between point A to B is 10 cm, it will take about 5 years to reach this distance.
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The CCA Aquajack has a mass of 6000 kg and accelerates forward at a rate of 5.0 m/s^2. What is the force acting on the vehicle?
Answer:
F = 30,000 N
Explanation:
Newton's second law
F = m*a
F = 6000 kg * 5.0 m/s^2
F = 30,000 N
Pennies minted after 1982 are made of mostly zinc and are coated with a bit of copper. Describe what you would have to do to find the percent composition by mass of a penny. What would you need to know, and what would you do with that information
Knowing each element's mass and molar mass allows one to compute the percentage of zinc and copper that is present in a coin.
Why do you use the term "molar mass"?The mass in grams from one mole of a chemical is its molar mass. A mole is the measurement of the number of things, such as atoms, molecules, and ions, that are present in a substance. Any material has 6.022 x 1023 molecules in a mole.
What is a molar mass, exactly?A substance's molar mass is the volume of the material that contains one mole of the substance. Its basic definition seems to be the weight of a single mole of a substance. The atomic mass of the each substance then multiplied by the subscript of such a element inside the chemical formula to determine the molar mass.
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What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)
Answer:
3 mol/L
Explanation:
Molarity = No. of moles of solute/Volume of solution in L
Energy in Chemical Reactions II: Reflect
Write a reflective about your learning in this unit. Your reflection should be at least three sentences. Use the following sentence starters as a guide.
- I feel confident about modeling how the energy in a reaction will change, because…
- To try to make sure to consider all of the bonds involved in a change from reactants to products, one strategy I used was…
- If I am not sure about the bond, energies and potential energies in a reaction, one strategy, I can use is…
- If I am not sure about how the energy moves between the system and the surroundings in a reaction on strategy, I can use it…
Energy in chemical reactions involves the process in which it is absorbed to break bonds, and energy is evolved as bonds are made.
What is a Chemical reaction?This is referred to as a process in which one or more substances, the reactants, are converted to one or more different substances, the products.
According to the modern view of chemical reactions, bonds between atoms in the reactants must be broken, and the atoms or pieces of molecules are reassembled into products by forming new bonds. All chemical reactions involve energy changes ad in some reactions, we are able to observe these energy changes as either an increase or a decrease.
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1)A student has a 0.500 M solution of hydrochloric acid (HCI) that is too concentrated
for an experiment. The student needs to dilute the solution to 0.100 M. If the
student needs 250 mL of the diluted solution, how much of the original solution
should be used?
250 ml
125 ml
50.0 ml
500 ml
2)Martha has a large amount of 1.25 M H₂ SO4 in her lab. She needs 0.36 moles of
H2 SO 4 for a chemical reaction she wants to perform. How many liters of the
olution should she use?
2.9 L
5.8 L
0.58L
0.29 L
Explanation:
Refer to pics.............
According to the molar concentration, if the student needs 250 ml of the diluted solution, 50 ml of the original solution should be used and in second case 0.29 liters of the solution should be used.
What is molar concentration?Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.
The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.
In terms of moles, it's formula is given as molar concentration= number of moles /volume of solution in liters.Substitution in second formula gives volume= 0.36/1.25=0.288 liters. and in case of 2 solutions it is calculated as, M₁V₁=M₂V₂ and on substitution gives V₁=0.1×250/0.5=50 ml.
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Which TWO situations would a tuned mass damper be a useful technology?
A
B
C
D
E
F
flood
landslide
high wind
avalanche
earthquake
W
volcanic eruption
Answer: highwinds and earthquake
Explanation:
"What does a tuned mass damper do?
Image result for tuned mass damper
A Tuned Mass Damper (TMD), also called a "harmonic absorber", is a device mounted to a specific location in a structure, so as to reduce the amplitude of vibration to an acceptable level whenever a strong lateral force such as an earthquake or high winds hit"
how can i find wavelength in a wave?
Wavelength (L) is calculated using: L = gT²/2π, here g=9.8 m/s2 and T is wave period in seconds.
What is wavelength?Wavelength of a wave describes how long the wave is and the distance from the "crest" (top) of one wave to the crest of next wave is called wavelength. We can also measure from the "trough" (bottom) of one wave to trough of next wave and get the same value for the wavelength.
We measure wavelength in following ways:
Use photometer to measure the energy of wave.
Convert energy into joules (J).
Divide energy by Planck's constant, 6.626 x 10⁻³⁴, to get the frequency of wave.
Divide speed of light, ~300,000,000 m/s, by frequency to get wavelength.
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look back at parts A and B to compare the properties of the unknown elements with the properties of the unknown elements. Based ok these properties, match each unknown element to its group in the periodic table. Drag each tile to the correct box .
The periodic chart is a tabular collection of chemical elements arranged according to atomic number, starting with hydrogen and going up to oganesson, which has the greatest atomic number.
What is the periodic table?In the periodic table, also referred to as the periodic chart of the (chemical) elements, the chemical elements are organised in rows and columns. It is frequently used in physics, chemistry, and other academic fields and is widely recognised as a sign of chemistry.
This is a visual representation of the periodic law, which states that the properties of molecular elements depend approximately periodically on their atomic numbers. There are four roughly rectangular "pieces" that make up the table's top.
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What type of solution would you have if you have a sealed container with 100g of
water and 0.15g of dissolved CO2 at 40°C?
unsaturated
saturated
supersaturated
The type of solution would you have if you have a sealed container with 100g of water and 0.15g of dissolved CO₂ at 40°C is a saturated solution.
What is saturated solution?
A saturated solution is a solution that has dissolved as much solute as it is capable of dissolving. In a saturated solution, no more solute can be dissolved at a given temperature. We can make an saturated solution by keep on dissolving solute until no more solute can be dissolved.
Given,
mass of water = 100g
mass of dissolved CO₂ = 0.15g
Solubility = (weight of solute ÷ weight of solvent)×100
Solubility = (0.15 ÷ 100)×100 = 0.15g
Therefore, the type of solution would you have if you have a sealed container with 100g of water and 0.15g of dissolved CO₂ at 40°C is a saturated solution.
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Answer:
saturated
Explanation:
What is the percent composition of magnesium hydroxide in this substance?
In magnesium hydroxide, magnesium makes up 41.7% of the compound by mass, and oxygen makes up 55.1% of the compound by mass. The remaining percentage would be hydrogen.
What is Percentage Composition?
Percentage composition refers to the relative mass of each element in a chemical compound expressed as a percentage of the total molecular mass of the compound. In other words, it is the percentage by mass of each element present in a compound.
To determine the percent composition of magnesium hydroxide in a substance, we need to know the mass of magnesium hydroxide in the substance and the total mass of the substance.
Without knowing the substance in question, we cannot determine the mass of magnesium hydroxide. However, we can use the chemical formula of magnesium hydroxide (Mg(OH)2) to calculate the mass percent of magnesium and oxygen in the compound.
The molar mass of magnesium hydroxide is:
24.31 g/mol (for Mg) + 2(15.999 g/mol) (for 2 O) + 2(1.008 g/mol) (for 2 H) = 58.32 g/mol
The mass percent of magnesium in magnesium hydroxide is:
(24.31 g/mol / 58.32 g/mol) x 100% = 41.7%
(2 x 15.999 g/mol / 58.32 g/mol) x 100% = 55.1%
Therefore, in magnesium hydroxide, magnesium makes up 41.7% of the compound by mass, and oxygen makes up 55.1% of the compound by mass. The remaining percentage would be hydrogen.
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An atom of oxygen has 10 neutrons and 10 electrons. what is its mass number?
The mass number of an atom is the sum of its number of its number of protons and number of neutrons. Hence the oxygen atom with 10 neutrons and 10 electrons has a 8 protons thus has the mass number of 18 .
What is mass number ?Mass number if a basic measurement of an atom indicating the mass of the nucleons in the atom by their number. The mass number of an atom is the sum of its number of protons and number of neutrons.
The atomic number of an atom is the number of electrons in its neutral state. The number of electrons is equal to the number of protons in neutral state. Oxygen is 8th element having 8 protons and 8 electrons.
Oxygen can gain two electrons to achieve octet in its valence shell and can have total 10 electrons. However the number of protons is not changing. Hence if it has 10 neutrons, then its mass number is 10 +8 = 18.
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If 310.71 grams of 02 are produced, how many grams of Hg will also be produced
The answer to this question depends on the reaction that is taking place.
What is reaction?Reaction is the process of responding to a stimulus. It is an instinctive response to an event, person, object, or situation. It can be conscious or unconscious, rational or irrational. Reactions can be physical (e.g. facial expressions, body language, etc.) or mental (e.g. thoughts, feelings, beliefs, attitudes, etc.). Reactions can vary from person to person, depending on the individual's beliefs and experiences. Reaction is often used to evaluate the success of a stimulus or to measure the intensity of a response.
If the reaction involves the combination of Hg and O2, then the amount of Hg produced will be the same as the amount of O2 produced, which in this case is 310.71 grams. However, if the reaction involves the decomposition of HgO2, then the amount of Hg produced will be twice the amount of O2 produced, which in this case would be.621.42 grams.
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What is the solvent in an icy glass of lemonade?
Question 1 options:
ice
water
sugar
lemon juice
Question 2 (1.25 points)
Liquid water in the earth's air is an example of a solution. Which type of solution would this be?
Question 2 options:
solid in a gas
liquid in a liquid
gas in a liquid
liquid in a gas
Question 3 (1.25 points)
Some solutions cannot dissolve any more solute. Which word is used to describe a solution of this type?
Question 3 options:
saturated
unsaturated
concentrated
weak
Question 4 (1.25 points)
The random movement of molecules in a solvent causes which of the following in a cube of solid solute?
Question 4 options:
a change in the chemical identity of a solute
a decrease in concentration of a solute
dissolution
a supersaturated solution
Question 5 (1.25 points)
What are the units of molarity?
Question 5 options:
moles of component/total moles of solution
moles of solute/kilograms of solvent
moles of solute/moles of solution
moles of solute/liters of solution
Question 6 (1.25 points)
Which of the following statements is true about strong, weak, and nonelectrolytes?
Question 6 options:
Strong electrolytes completely dissociate in water, weak electrolytes partially dissociate, and nonelectrolytes do not dissociate.
Strong electrolytes completely dissociate in water, weak electrolytes do not dissociate, and nonelectrolytes partially dissociate.
Strong electrolytes partially dissociate in water, weak electrolytes completely dissociate, and nonelectrolytes do not dissociate.
Strong electrolytes partially dissociate in water, weak electrolytes partially dissociate, and nonelectrolytes completely dissociate.
Question 7 (1.25 points)
What is the number of moles of a solute that is dissolved in 1 liter of solution?
Question 7 options:
molarity
molality
mole fraction
mass percent
Question 8 (1.25 points)
What type of solution would you have if you have a sealed container with 100g of water and 0.15g of dissolved CO2 at 40°C?
Question 8 options:
unsaturated
saturated
supersaturated
Question 9 (1.25 points)
Which colligative property is employed when coolant is added to a car's radiator to keep it from overheating?
Question 9 options:
freezing-point depression
boiling-point elevation
vapor-pressure lowering
Question 10 (1.25 points)
Which of the following substances is insoluble in water, according to these solubility rules?
Question 10 options:
Silver chloride (AgCl)
Sodium chloride (NaCl)
Potassium nitrate (KNO3)
Calcium hydroxide (Ca(OH)2)
Note: the curved line graph is for question and the other one with different elements is for question 10!
Answer: Your welcome!
Explanation:
Answer 1: Ice, water, sugar, lemon juice
Answer 2: Liquid in a gas
Answer 3: Saturated
Answer 4: Dissolution
Answer 5: Moles of solute/liters of solution
Answer 6: Strong electrolytes completely dissociate in water, weak electrolytes partially dissociate, and nonelectrolytes do not dissociate.
Answer 7: Molarity
Answer 8: Saturated
Answer 9: Freezing-point depression
Answer 10: Silver chloride (AgCl)
How many liters of O2 will be produced at a temperature of 12.43 degrees Celsius and 941.34 kPa if 37.25 grams of KCIO, decompose according to the following balanced equation:
2KCIO3
---> 2KCI + 30,(g)
Round your answer to three decimal places.
To solve this problem, we first need to use stoichiometry to determine the number of moles of O2 produced by the decomposition of 37.25 grams of KCIO3.
From the balanced equation, we know that 2 moles of KCIO3 decompose to produce 3 moles of O2. Therefore, we can use the molar mass of KCIO3 to convert 37.25 grams to moles:
37.25 g KCIO3 x (1 mol KCIO3/ 122.55 g KCIO3) = 0.3032 mol KCIO3
Using the stoichiometry of the balanced equation, we can convert the moles of KCIO3 to moles of O2:
0.3032 mol KCIO3 x (3 mol O2/ 2 mol KCIO3) = 0.4548 mol O2
Now that we know the number of moles of O2 produced, we can use the ideal gas law to calculate the volume of gas produced at the given temperature and pressure.
V = nRT/P
Where:
V = volume of gas (in liters)
n = number of moles of gas
R = ideal gas constant (0.0821 L·atm/K·mol)
T = temperature (in Kelvin)
P = pressure (in atm)
First, we need to convert the temperature to Kelvin:
12.43°C + 273.15 = 285.58 K
Now we can substitute the values into the ideal gas law equation:
V = (0.4548 mol)(0.0821 L·atm/K·mol)(285.58 K)/(941.34 kPa/101.325 kPa/atm)
V = 0.0151 L or 15.1 mL (rounded to three decimal places)
Therefore, 37.25 grams of KCIO3 will produce 15.1 mL of O2 at a temperature of 12.43°C and 941.34 kPa.
I need help with the rest . I’m giving 30 points
Ammonia and phosphoric acid are the reactants for the reaction 9, for the formation of Ammonium Phosphate.
What are ionic reactions?
Ionic reaction is the reaction of ions that are anions and cations to form a compound in a medium in which they are dissolved. When ions of water-soluble salts interact with each other in aqueous medium results in the formation of water-insoluble salts.
9) 3NH₃ + H₃PO₃ → (NH₄)₃PO₄
10) CaCO₃ + HCl → CaCl₂ + H₂CO₃
11) SnO₂ + HCl → SnCl₂ + H₂O
12) Ca(OH)₂ + HNO₃ → Ca(NO₃)₂ + H₂O
13) C₃H₅O(COOH)₃ + 3KOH → C₃H₅O(COOK)₃ + 3H₂O
14) 2Mg + C₃H₅O(COOH)₃ → (C₃H₅O(COO)₃)Mg₂ + H₂
15) H₃PO₄ + 3KOH → K₃PO₄ + 3H₂O
Therefore, Ammonia and phosphoric acid are the reactants for the reaction 9, for the formation of Ammonium Phosphate.
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Description of Entry for soil
Soil is a mixture of organic and inorganic materials that forms the uppermost layer of the Earth's crust. It is a complex, three-dimensional matrix of mineral particles, organic matter, water, air, and living organisms. Soil provides critical habitat for various microorganisms, insects, plants, and animals, making it a key component of terrestrial ecosystems.
How is soil formed?Soil is formed through weathering, which breaks down rocks and other materials into smaller particles. Various factors, including temperature, moisture, wind, and the activities of living organisms, influence this process. Over time, layers of organic matter accumulate on the soil's surface, creating a rich environment for plant growth.
What is the function of soil?Soil has several important functions, including supporting plant growth, regulating water flow, and cycling nutrients. It also plays a key role in carbon sequestration, helping mitigate climate change's impacts by storing carbon in the form of organic matter.
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. What is the mole ratio of Na₂CO3 to Al₂(CO3)3?
The mole ratio of Na₂CO3 to Al₂(CO3)3 can be determined by comparing the coefficients in the balanced chemical equation for the reaction involving these two compounds.
What is mole ratio?Mole ratio is a term used in chemistry to describe the relationship between the amount of two or more substances in a chemical reaction. It is the ratio of the number of moles of one substance to the number of moles of another substance involved in the reaction.
A mole is a unit of measurement used in chemistry to quantify the amount of a substance. One mole of any substance contains Avogadro's number of particles, which is approximately 6.02 x 10^23 particles. Therefore, a mole ratio describes the relative amounts of substances in terms of the number of moles.
The mole ratio of Na₂CO3 to Al₂(CO3)3 can be determined by comparing the coefficients in the balanced chemical equation for the reaction involving these two compounds.
However, since a reaction is not specified, I can't give you an exact answer.
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Express 1,670,000,000 in scientific notation.
Answer:
1.67*10^9
Explanation:
Answer:1.67*10^9
Explanation:
a chemist produced 26.75 moles of potassium oxide in the lab . how many particles of potassium ocide is this ?
Answer:
1.610 x 10^25 particles
Explanation:
To calculate the number of particles in 26.75 moles of potassium oxide, we can use Avogadro's number, which relates the number of particles in a substance to its number of moles.
Avogadro's number is approximately 6.022 x 10^23 particles per mole. Therefore, we can calculate the number of particles in 26.75 moles of potassium oxide as:
26.75 moles x 6.022 x 10^23 particles/mole = 1.610 x 10^25 particles
Therefore, there are approximately 1.610 x 10^25 particles of potassium oxide in 26.75 moles of the substance.
The 4 main components of WHMIS 2015 are worker education and training, labelling, hazard identification and product classification and safety data sheets. Ture or false
The four main components of WHMIS 2015 of the system are worker education and training, labelling, hazard identification and product classification, and safety data sheets (SDS). The correct answer is True.
WHMIS 2015 is a comprehensive system designed to ensure the safe use, handling, storage, and disposal of hazardous chemicals in Canadian workplaces. Worker education and training are essential to ensure that workers understand the hazards associated with the chemicals they use and how to work safely with them. Labelling helps to identify hazardous products and communicate the hazards to workers, while hazard identification and product classification ensure that hazardous products are properly classified and labelled.
Finally, SDS provide detailed information on the hazards of a product and the precautions that need to be taken when working with it. All of these components work together to ensure that hazardous chemicals are handled safely and that workers are protected from harm.
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Study the image.
Which best describes what the picture shows?
an organism
a community
a niche
a population
Answer:
No picture shown above?
You have sweetened iced tea with sugar, and ice cubes are present, How many phases are present?
The number of phases present is two.
Phases present in a systemThere are two phases present in sweetened iced tea with sugar and ice cubes. The first phase is the liquid phase of the tea, which contains water, sugar, and other dissolved substances.
The second phase is the solid phase of ice cubes, which contains solid water molecules. These two phases are in contact with each other, and the sugar molecules in the liquid phase are dissolved in the water molecules.
The ice cubes, being a solid, do not dissolve in the liquid phase but coexist with it in the same container.
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