the major species ultimate concentrations of AgCl+2NH 3[Ag(NH 3) 2] + +Cl − K=K 1 K two =1.7×10 7 ×1.85×10 −10 =0.31×10 −2.
AgCl is water soluble, right?Na+, Ag+, Cl-, & NO3- are present in the solution as a result, however AgCl is not water soluble. Cl- and Ag+ are currently dissolved together, and as a result, AgCl will precipitate out of solution after the two have combined to create AgCl.
Why would someone use silver chloride?In order to help with mercury elimination, silver chloride has indeed been employed as an antidote to mercury poisoning. a component of several personal deodorant products that acts as an antibacterial agent. to keep drinking water in tanks clean and safe for a long time.
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A tank of methane holds 1,550m3 and is held at STP.
a. How many moles of methane are in the tank?
b. How many Kilograms of methane are in the tank?
c. What is the density of the methane?
d. How many carbon atoms are in the tank?
According to the question, there are 65,569 carbon atoms, 1,051.6 kg of gas, 0.716 g/L of methane density, and 65,569 mole of methane in the tank.
One mole—what is it?A mole is the volume of a material that includes 6.022 X 1023 of the substance's particles, atom, ions, molecules, etc. A mole is a unit for counting molecules, ions, or atoms.
a. The ideal gas law, PV = nRT, can be used to estimate how many moles of methane are present in the tank. The pressure and temperature are both 1 atm at STP. 0.0821 L atm/K mol is the real gases constant.
The result is that n = (PV) / (RT)
= (1 atm x 1550 m3) / (0.0821 Latm/Kmol x 273 K)
= 65,569 moles.
b. The molarity of methane should be used to determine the weight of methane in kilograms. Methane has a molar mass of 16.04 g/mol.
Methane's mass in kilos is as follows:
1,051.6 kg is equal to 65,569 moles times 16.04 g/mol/1000 g/kg.
c. The optimal gas law and the molecular concentration of methane can be used to get the density of methane.
Density is determined as follows: (16.04 g/mol at 1 atm) / (0.0821 L/atm/K mol at 273 K) = 0.716 g/L.
d. Using the amount of moles of methane that we established in part (a), we can use that information to calculate the amount of carbon atoms inside the tank.
As a result, the tank is filled 65,569 carbon atoms.
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Indicate the type and number of orbitals in each of the following energy levels or sublevels.
a. n = 1
b. 3p sublevel
Quantum numbers are a set of four numbers used to describe the quantum state of an electron in an atom. These numbers specify the energy, orbital shape, orientation, and spin of the electron.
What is Energy Sublevels?
Energy sublevels, also known as subshells, are regions within an energy level where electrons are likely to be found. Each energy sublevel is characterized by a unique shape and orientation in space, and can contain a specific number of electrons.
The energy sublevels within an energy level are arranged in order of increasing energy, with the s sublevel being the lowest in energy and the f sublevel being the highest in energy. The number and arrangement of electrons in an atom's energy sublevels determine its electronic configuration and its chemical and physical properties.
a. When n = 1, there is only one energy level and it contains one s orbital.
b. The 3p sublevel corresponds to the third energy level (n=3) and consists of three p orbitals. The p orbitals are oriented along the x, y, and z axes and can hold a total of 6 electrons (2 electrons per orbital). Therefore, the 3p sublevel contains three p orbitals.
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PLS HELP ASAPPP !!! WILL GIVE BRAINLIEST
ANSWER ALL THE FOLLOWING
One of the way of writing the chemical formula of an ionic compound is to use crisscross method. In this method, the numerical value of each of the ion charges is crossed over to become the subscript of the other ion.
What is a chemical formula?The symbolic representation of the composition of a compound is given by the chemical formula of the compound. In a chemical formula an anion is written on the right side whereas a cation is written on the left side.
1 Question answers:
a. Cr₂O₃
b. (NH₄)₃PO₄
c. CaSO₄
2 Question answers:
a. Iron (II) Chloride
b. Barium hydroxide
c. Lithium cyanide
d. Lead (II) Chloride
3 Question answers:
a. Sulfur tetrafluoride
b. Chloryl perchlorate
c. Dinitrogen trioxide
d. Phosphorous pentoxide
4 Question answers:
a. C₂H₂
b. C₂H₄
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HELP! ILL MARK YOU AS BRAINLIST.
Ascorbic acid (vitamin C) contains 40.92 % % carbon, 4.58% % hydrogen, and 54.50% % oxygen by mass. Assume a 100-gg sample of ascorbic acid. How many moles of carbon, hydrogen, and oxygen are present in a 100-gg sample of ascorbic acid? Enter the number of moles of carbon, hydrogen, and
oxygen numerically, separated by commas.
Answer:
In 100 g of ascorbic acid, we will have 40.92 g C, 4.58 g H, and 54.50 g O. The whole-number ratio gives us the subscripts for the empirical formula. Thus, the empirical formula is C3H4O3.
Explanation:
Answer: Hope this helps
Explanation:
Household bleach contains 5.25% (m/v) of sodium hypochlorite. It is often recommended that you dilute the household bleach to 0.110% (m/v) before using. If you need 1.00 gallons of diluted bleach, how many cups of household bleach should you measure?
Answer:
First, we need to calculate how much sodium hypochlorite is in 1 gallon of 0.110% bleach solution:
0.110% (m/v) = 0.110 g/100 mL
1 gallon = 3,785 mL
So, the mass of sodium hypochlorite in 1 gallon of 0.110% bleach solution is:
0.110 g/100 mL x 3,785 mL = 4.1635 g
Now we can use this information to calculate how much undiluted household bleach we need:
5.25% (m/v) = 5.25 g/100 mL
Let's call the volume of undiluted bleach we need "V".
We can set up a proportion:
5.25 g/100 mL = 4.1635 g/3785 mL
Solving for V:
5.25 g/100 mL = x/3785 mL
x = 199.0425 g
Finally, we need to convert grams to cups. The density of household bleach is about 1.08 g/mL, so:
199.0425 g ÷ 1.08 g/mL = 184.31 mL
There are 48 teaspoons in a cup, and 5 mL in a teaspoon, so:
184.31 mL ÷ 5 mL/teaspoon ÷ 48 teaspoons/cup ≈ 0.77 cups
Therefore, you should measure approximately 0.77 cups of household bleach to make 1.00 gallon of diluted bleach solution.
A reaction has a rate constant of 0.012s ^ - 1 at 400.0 K and 0.691s ^ - 1 at 450.0 K.
Determine the activation barrier for the reaction.
Answer:
The rate constant of a reaction is related to the activation energy (Ea) and the temperature (T) by the Arrhenius equation:
k = A * e^(-Ea/RT)
where k is the rate constant, A is the pre-exponential factor, R is the gas constant, and T is the absolute temperature.
Taking the natural logarithm of both sides of the equation, we get:
ln(k) = ln(A) - (Ea/RT)
We can use this equation to determine the activation energy for the reaction by comparing the rate constants at two different temperatures. For example, at 400.0 K and 450.0 K, we have:
ln(k1) = ln(A) - (Ea/RT1)
ln(k2) = ln(A) - (Ea/RT2)
where k1 is the rate constant at 400.0 K, k2 is the rate constant at 450.0 K, and RT1 and RT2 are the product of the gas constant and temperature at each temperature.
Taking the difference between the two equations, we get:
ln(k2/k1) = Ea/R * (1/RT1 - 1/RT2)
Solving for the activation energy (Ea), we get:
Ea = -R * ln(k2/k1) / (1/RT1 - 1/RT2)
Substituting the given values, we get:
Ea = -8.314 J/mol*K * ln(0.691/0.012) / (1/400.0 K - 1/450.0 K)
Ea = 93.8 kJ/mol
Therefore, the activation energy for the reaction is 93.8 kJ/mol.
Both conclusions are based on valid data and scientific reasoning. How can both conclusions be valid
Both conclusions can be valid as they are based on valid data and scientific reasoning. This is due to the fact that different data sets and scientific arguments can lead to different conclusions.
What is conclusions?A conclusion is a summary of the main points discussed in an essay, report, presentation, or other document. It should be concise and well-written, and should not include any new information or arguments. A conclusion typically reviews the main points and ties them together, offering a final perspective on the topic. It is important to write a clear and effective conclusion, as it is the last thing the reader will read and will leave them with a lasting impression. A good conclusion can solidify the main idea of the document and leave the reader with a sense of closure.
For example, one data set may show that a particular drug is effective in treating a certain condition, while another data set may show that the same drug is not as effective. Therefore, both conclusions can be valid as long as the data and scientific reasoning used to draw them are valid.
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How do chemists use Avogrado’s number to connect moles and atomic particles?
The molar quantity must be multiplied by Avogadro's number to be converted to moles or atoms.
How can a scientist use Avogadro's number?
One of the basic constants in chemistry is Avogadro's number. When the same amount of atoms or molecules are being compared, it allows comparison of the various atoms or molecules of a given substance.
A material's mole is equivalent to 6.022 x 10²³of that substance (such as atoms, molecules, or ions). The term "Avogadro's number" or "Avogadro's constant" refers to the integer 6.022*10²³. The mole idea can be used to convert between particle mass and number.
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An air/gasoline vapor mix in an automobile cylinder has an initial temperature of 173 ∘C and a volume of 12.4 cm3 . If the mixture is heated to 567 ∘C with the pressure and amount held constant, what will be the final volume of the gas in cubic centimeters?
Answer:
Explanation:
We can solve this problem using the combined gas law:
(P1V1) / T1 = (P2V2) / T2
where P is the pressure, V is the volume, and T is the temperature, measured in kelvins (K). The amount of gas is assumed to be constant.
We need to convert the initial and final temperatures to kelvins by adding 273.15 to each temperature:
T1 = 173 + 273.15 = 446.15 K
T2 = 567 + 273.15 = 840.15 K
Substituting the given values into the equation and solving for V2, we get:
(1V1) / T1 = (1V2) / T2
V2 = (T2/T1) * V1
V2 = (840.15/446.15) * 12.4 cm3
V2 = 23.3 cm3 (rounded to one decimal place)
Therefore, the final volume of the gas will be 23.3 cubic centimeters.
Give a description of each of the five chemical reactions from the point of view of different classifications and arrange the coefficients
1. The reaction between the reactants potassium iodide and lead nitrate, which results in potassium nitrate and lead iodide. It is hence a double decomposition reaction.
Types2. The reaction between magnesium (Mg) and titanium tetrachloride (TiCl4) produces titanium (Ti) and magnesium chloride (MgCl2). It is a displacement reaction because titanium in titanium chloride is displaced by the more active magnesium.
3. The reaction between CO2 and H2O is an illustration of an addition reaction, or more specifically, a nucleophilic addition reaction. Thus, the hydrogen ion from the water molecule serves as the nucleophile.
4. The production of salt, which is copper chloride and water, as a result of the reaction between copper oxide and hydrochloric acid is an example of neutralization.
HCl and Copper Oxide together produce a Neutralization reaction.
5. A decomposition reaction takes place when a single reactant splits into two or more products. The all-inclusive formula AB A + B can be used to represent this. Hydrogen peroxide and water being broken down into hydrogen and oxygen are two examples of decomposition reactions.
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Which of the following substances is insoluble in water, according to these solubility rules?
A) Sodium chloride (NaCl)
B) Calcium hydroxide (Ca(OH)2)
C) Potassium nitrate (KNO3)
D) Silver chloride (AgCl)
Which of the following ions is soluble in water when paired with according to the solubility rules chart?
C) Chloride (Cl-)
B) Sulfate
D) Hydroxide (OH-)
A) Carbonate
Question 12 (1.25 points)
Which of the following combinations will result in a precipitate, according to solubility rules?
A) Sodium nitrate (Na2CrO4) and barium chloride (BaCl2)
B) Ammonium chloride (NH4Cl) and sodium hydroxide (NaOH)
C) Calcium sulfate (CaSO4) and sodium carbonate (Na2CO3)
D) Potassium iodide (KI) and silver nitrate (AgNO3)
Question 13 (1.25 points)
Which of the following statements is true about dilute and concentrated solutions?
A) Dilute solutions have a higher solvent-to-solute ratio than concentrated solutions.
B) Concentrated solutions contain more solute than dilute solutions.
C) Dilute solutions contain more solute than concentrated solutions.
D) Concentrated solutions have a higher solvent-to-solute ratio than dilute solutions.
Question 14 (1.25 points)
What volume of a 0.500 M sodium chloride solution is required to make 500. mL of a 0.100 M sodium chloride solution?
A) 100 L
B) 0.100 ml
C) 0.100 L
D) 1 L
Question 15 (1.25 points)
A student has a 0.500 M solution of hydrochloric acid (HCl) 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?
A) 250 ml
B) 50.0 ml
C) 125 ml
D) 500 ml
Answer:
Question 10: Which substance is insoluble in water?
Answer: Silver chloride (AgCl).
Question 11: Which ion is soluble in water?
Answer: Chloride (Cl-).
Question 12: Which combination will form a precipitate (solid) according to solubility rules?
Answer: Calcium sulfate (CaSO4) and sodium carbonate (Na2CO3).
Question 13: Which statement is true about dilute and concentrated solutions?
Answer: Concentrated solutions have more solute than dilute solutions.
Question 14: How much of a 0.500 M sodium chloride solution is needed to make 500 mL of a 0.100 M solution?
Answer: 0.100 L (100 mL).
Question 15: How much of a 0.500 M hydrochloric acid solution should be used to make 250 mL of a 0.100 M solution?
Answer: 50.0 mL.
Explanation:
1.
2Pb(NO3)2 + Na₂CO3 → PbCO3 +2 NaNO3
If 484.06 grams of PbCO3 are produced, how many grams of NaNO3 will also be produced?
If 484.06 grams of lead carbonate are produced, 307.68 grams of sodium nitrate will also be produced.
How to calculate mass using stoichiometry?Stoichiometry refers to the study and calculation of quantitative (measurable) relationships of the reactants and products in chemical reactions (chemical equations).
According to this question, lead nitrate reacts with sodium carbonate to produce lead carbonate and sodium nitrate.
Based on the above equation, 1 mole of lead carbonate and 2 moles of sodium nitrate are produced.
484.06 grams of lead carbonate is equivalent to 1.81 moles.
1.81 moles of lead carbonate will produce 3.62 moles of sodium nitrate.
3.62 moles of sodium nitrate is equivalent to 307.68 grams.
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what features is used to compare the different groups of people in the world?
There are various parameters used to group people around the world. We can use the cost of living, place of residence, life style, culture etc. to compare different groups of people in the world.
What are features for social comparison?According to the social comparison hypothesis, people evaluate their own social and personal worth by evaluating how they stack up against others. The comparison strategies people use to assess their actions, successes, and ideas in relation to those of other people are described by Leon Festinger's comparison theory, which was first presented in 1954.
In addition to influencing how people perceive themselves, social comparison also affects how they act. Think about how social comparisons, both positive and negative, can affect how you feel about yourself. belief, certainty, drive, and attitude.
Comparing the life styles, culture, socio-economic status, language etc. are general features used to compare different group of people around the world.
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Given that hotter blackbodies produce more energy than cooler blackbodies, why do cooler red giants have much higher luminosity than much hotter red dwarfs?
Multiplying each value by two gives
the ratio below. What is the empirical
formula for the compound?
20
5 C 8 H
:
2
1) C₂.5H4O 2) C5H8O₂
3) C5H4O 4) C5H4O2
Enter the answer choice number.
The chemical formula of a combination that provides the quantities (ratios) of the elements contained in the complex but not the actual numbers or order of atoms is known as an empirical formula. This would be the elemental compound's lowest whole integer percentage.
What is an empirical formula in chemistry?The empirical formula of a chemical substance in chemistry is the simplest whole number quantity of atoms contained in the product. [1] As an illustration, the empirical formula of sulfur monoxide, or SO, is merely SO, as is the empirical formula of disulfur dioxide, S2O2.
Thus, sulfur monoxide and disulfur dioxide, both sulfur and oxygen molecules, have the same empirical formula. Their molecular formulas, which describe the amount of atoms in each molecule of a chemical substance, are, however, not identical.
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Answer:
2
Explanation:
Calculate the number of moles and the mass of the solute in each of the following solutions:
(a) 2.00 L of 18.5 M H2SO4, concentrated sulfuric acid
(b) 100.0 mL of 3.8 X 10^-6 M NaCN, the minimum letal concentration of sodium cyanide in blood serum.
a) 2.00 L of 18.5 M H2SO4, concentrated sulfuric acid
What is sulfuric acid?
Sulfuric acid is a strong mineral acid commonly used in industrial settings for a variety of purposes. It is a colorless, odorless, oily liquid that is highly corrosive and reacts violently with many organic and inorganic materials.
Number of moles = Molarity x Volume
= 18.5 M x 2.00 L
= 37.0 moles
Mass of the solute = Number of moles x Molar Mass
= 37.0 moles x 98 g/mol
= 3,646 g
b) 100.0 mL of 3.8 X 10^-6 M NaCN, the minimum letal concentration of sodium cyanide in blood serum.
Number of moles = Molarity x Volume
= 3.8 x 10^-6 M x 0.100 L
= 3.8 x 10^-8 moles
Mass of the solute = Number of moles x Molar Mass
= 3.8 x 10^-8 moles x 49 g/mol
= 1.86 x 10^-7 g
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2.74 Give the chemical formula for each of the following ionic com- pounds: (a) sodium phosphate, (b) zinc nitrate, (c) barium bromate, (d) iron(II) perchlorate, (e) cobalt(II) hydrogen car- bonate, (f) chromium(III) acetate, (g) potassium dichromate.
Phosphate of sodium: Nitrate of zinc, Na3PO4, Zn(No3)2, bromate of barium: Perchlorate of iron (II) and ba(BrO3)2: Cobalt (II) hydrogen carbonate, Fe(ClO4)2: Co(HCO3)2 as cobalt bicarbonate.
Is acetic acid C2H3O2?Acetic acid, also known as ethanoic acid, is an organic compound with the chemical formula CH3COOH (also written as C2H4O2, HC2H3O2) that is an acidic, colorless liquid.
How does K2Cr2O7 function as an oxidizer?As the oxidation state of their atoms increases during a chemical reaction with potassium dichromate, elements become more electronegative. Potassium dichromate is a potent oxidizer in an acidic environment. K2Cr2O7 is present as Cr2O7 - (orange) in acidic medium, but it is transformed into CrO4 - (yellow) in basic medium.
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What is the role of grasses in the food web above
The food web in the image you provided includes a variety of organisms such as producers, consumers, and decomposers. Grasses play an important role in this food web as they are a primary producer.
What is the process by which grasses and other plants convert sunlight into energy in the food chain?
Grasses, like other plants, use photosynthesis to convert sunlight into energy, which they use to grow and produce organic compounds such as sugars and starches. These compounds form the basis of the food chain, providing energy and nutrients for herbivores such as insects, rodents, and large mammals like deer and bison.
In turn, these herbivores are consumed by predators such as snakes, hawks, and wolves, which are then decomposed by scavengers and decomposers such as bacteria and fungi. These decomposers break down the remains of dead organisms and return nutrients to the soil, where they can be taken up by plants like grasses to start the cycle anew.
Therefore, grasses are a critical component of the food web, serving as the foundation for energy flow and supporting the survival of many different species in the ecosystem.
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Why do carbon, silicon, and germanium share many chemical properties?
o They have the same atomic mass.
o They have the same atomic number.
o They have the same ratio of electrons to protons.
o They have the same electron configuration.
Answer:
Carbon, silicon, and germanium share many chemical properties because they belong to the same group in the periodic table, which is group 14 (also known as the carbon group). The elements in this group have the same number of valence electrons (4), which gives them similar chemical properties.
The correct option is: They have the same number of valence electrons (4), which gives them similar chemical properties.
Explanation:
What volume of carbon dioxide can be produced from the combustion of 2.0 L of methane at STP?
CH4( g ) + 2O2( g ) → CO2( g ) + 2H2O( g )
Cuantos moles hay en 158 gramos de oro
There are 0.802 moles of gold present in 158 grams of gold.
What is meant by molar mass?Mass in grams of one mole of the compound is known as the molar mass of substance. It is the mass divided by amount-of-substance measured in moles. Molar mass of a compound can be found out by adding standard atomic masses of constituent atoms.
molar mass of gold : 196.967 g/mol.
To find the number of moles of gold in 158 grams, we use the following formula:
moles = mass / molar mass
moles = 158 g / 196.967 g/mol
moles = 0.802 mol
Therefore, there are 0.802 moles of gold in 158 grams of gold.
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Note: The question given on the Portal is incomplete. Here is the correct question.
Question: How many moles are in 158 grams of gold?
(2) Calculate the enthalpy of the following chemical reaction CS2 + 30₂(g) ➡️ CO₂(g) + 2S0₂(g) ∆H = ?? Given:
C(s) + O₂(g) → CO₂ (g) ∆H = -393.5 KJ
S(s) + O₂(g) → SO₂(g) ∆H = -296.8KJ
C(s) + 2Sg) → CS₂ (l) ∆H = +87.9kJ
The enthalpy of the following chemical equation is -393.5+(-296.8)+87.9=-602.4 kilojoules.
What is chemical equation?Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.
A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .
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A sample of neon has a pressure of 56 atm at 29.5 celcius. at what temp in kelvin would the gas exert 75 atm of pressure on the container
Explanation:
Refer to pic..........
Albert places a thermometer in hot water during a lab and the column of fluid inside the thermometer rises to 90 degrees Celsius. As the student takes measurements of the temperature, it drops until it reaches 24 degrees Celsius, room temperature. When the data is graphed, Albert notices that the initial decrease in temperature is more rapid. How should he explain his observation?
Question options:
Water has a low specific heat so it rapidly loses heat to its surroundings.
The decrease should have been constant, so the thermometer was probably defective.
As the water and air seek to reach the same temperature, the water absorbs cold from the surrounding air.
The difference between the water's temperature and that of the classroom was greater in the first few minutes so the water lost heat more rapidly.
The water lost heat more quickly because the temperature difference between the classroom and the water was greater in the first few minutes.
When a thermometer is immersed in hot water, why does a column of mercury initially descend and then rise?When a mercury thermometer is immersed in hot water, the bulb initially absorbs heat from the outside and expands, causing the mercury column in the thermometer to initially descend slightly. Mercury expands as heat is transferred to it later.
Would the column's mercury level rise or fall in response to an increase in air pressure?This is because mercury is pushed up a tube as a column of air above the barometer presses on a mercury-filled dish. The mercury in the tube rises more rapidly in response to the greater force of the downward push.
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The empirical formula for the artificial sweetener aspartame is C14H18N205. What is the mass percentage of carbon in aspartame.
57.14% is the mass percentage of carbon in aspartame.
Define empirical formula.
An empirical formula is a compound's chemical formula that only specifies the ratios of the elements it contains and not the precise quantity or arrangement of atoms. This would be the compound's ingredient with the lowest whole number ratio.
Typically, the empirical formula is used to merely display the components of a structure. When one wishes to quickly identify the elements they are working with, this is helpful. When you want to know how many atoms of each element are present in the substance, the molecular formula is the most helpful.
The mass percentage of carbon is 14*12/(14*12 + 18*1 + 2*14 + 5*16) i.e. 57.14%
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What is the hydroxide ion concentration of a solution with a pOH of 5.0?
Answer:
0.00001 M
Explanation:
The pOH of a solution is defined as the negative logarithm of the hydroxide ion concentration:
pOH = -log[OH-]
Therefore, we can rearrange this equation to solve for [OH-]:
[OH-] = 10^(-pOH)
If the pOH of a solution is 5.0, then:
[OH-] = 10^(-5.0)
[OH-] = 1.0 x 10^(-5.0)
[OH-] = 0.00001
Therefore, the hydroxide ion concentration of the solution is 0.00001 M.
Answer the following:
V.) a)Empirical formula of naphthalene is C5H4. b)Empirical formula of benzene is CH. VI)a)Na2SO4 (aq) + Ca(NO3)2 (aq) → CaSO4 (s) + 2NaNO3 (aq); b)3Mg (s) + N2 (g) → Mg3N2 (s) VII)a)2Hg(NO3)2 (s) → 2Hg (l) + O2 (g) + 2NO2 (g) b)Ca3(PO4)2 (s) + 3H3PO4 (aq) → 6CaHPO4 (s) c)FeCl3 (aq) + 3NaOH (aq) → Fe(OH)3 (s) + 3NaCl (aq)
What is chemical reactions?Process that leads to the chemical transformation of one set of chemical substances to another is called chemical reaction.
V) a) Ratio of carbon to hydrogen atoms can be found by dividing each atom count by the greatest common factor (GCF) of the two numbers.
GCF of 10 and 8 is 2.
10/2 = 5 and 8/2 = 4.
Empirical formula of naphthalene is C5H4.
b) For benzene, the ratio of carbon to hydrogen atoms can be found by dividing each atom count by their GCF, which is 6.
6/6 = 1 and 6/6 = 1.
Empirical formula of benzene is CH.
VI)a) Chemical equation for the reaction is:
Na2SO4 (aq) + Ca(NO3)2 (aq) → CaSO4 (s) + 2NaNO3 (aq)
Reactants: Na2SO4 (aq) and Ca(NO3)2 (aq)
Products: CaSO4 (s) and 2NaNO3 (aq)
Type of reaction: Double displacement or metathesis reaction
b) Chemical equation for the reaction is:
3Mg (s) + N2 (g) → Mg3N2 (s)
Reactants: 3Mg (s) and N2 (g)
Product: Mg3N2 (s)
Type of reaction: Combination or synthesis reaction
VII)a) The balanced chemical equation :
2Hg(NO3)2 (s) → 2Hg (l) + O2 (g) + 2NO2 (g)
b) Balanced chemical equation:
Ca3(PO4)2 (s) + 3H3PO4 (aq) → 6CaHPO4 (s)
c) Balanced chemical equation :
FeCl3 (aq) + 3NaOH (aq) → Fe(OH)3 (s) + 3NaCl (aq)
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A sample of iron was determined to have a mass of 27.3162g and a volume of 3.475 cm³. What is the density of the iron sample?
Answer:
7.859 g/cm³.
Explanation:
Density = Mass/Volume
the mass of the iron sample is 27.3162g and its volume is 3.475 cm³, so calculate its density as:
Density = 27.3162g/3.475 cm³ = 7.859 g/cm³
Therefore, the density of the iron sample is 7.859 g/cm³.
according to the theory of plate tectonics which is one feature that plates carry
According to the theory of plate tectonics, plates carry both the oceanic and continental crusts of the Earth's lithosphere.
The lithosphere is the rigid outermost layer of the Earth, which is broken into several large plates that move relative to one another over time.
What is plate tectonics theory?
The plate tectonics theory is a scientific model that explains the movement and behavior of the Earth's lithosphere, which is the rigid outermost layer of the planet. According to this theory, the lithosphere is divided into several large plates that move and interact with one another over time.
The driving force behind plate movement is the convection currents in the mantle layer beneath the lithosphere. As these currents move, they drag the plates along with them, causing them to collide, slide past one another, or move apart. These interactions can cause geological events such as earthquakes, volcanic eruptions, and the formation of new landmasses.
The plate tectonics theory has provided a framework for understanding many of the geological features of the Earth's surface, including the distribution of mountain ranges, the formation of ocean basins, and the occurrence of earthquakes and volcanic activity. The theory has also helped explain the distribution of plant and animal species, as well as the historical movements of the continents over geological time.
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Answer: a. seafloor
Explanation: