CHEM Openstax Chemistry Chapter 4

When Mg(OH)2 reacts with H2SO4 what are the products? (Outcome # 1,2,6) DOK 2

A) Mg(OH)2 and H2SO4

B) MgSO4 and H2O

C) MgO and H2SO4

MgSO4 and H2O

Which of the following is a strong acid? (Outcome # 1,3,5,9) DOK 1

A) HNO3

B) CaSO4

C) NH3

HNO3

Which of the following is a strong acid when mixed in water? (Outcome # 1,2,5) DOK 1

A) HClO

B) HBr

C) HNO2

HBr

What are the products of the reaction between barium hydroxide and hydrogen chloride? (Outcome # 1,2,5,6,9) DOK 2

A) Barium chloride and water

B) Barium hydroxide and water

C) Barium chloride and barium hydride

Barium chloride and water

The symbol that separates the reactants from products in a reaction and means "to yield" is ________. (Outcome # 1,5,6,9) DOK 1

A) +

B) (s)

C) (arrow pointing towards right)

(arrow pointing towards right)

The chemical reaction CaCO3 (arrow pointing towards right) CaO + CO2 is classified as a (Outcome # 1,9) DOK 1

A) synthesis reaction

B) decomposition reaction

C) single-replacement reaction

decomposition reaction

How many mole ratios can be correctly obtained from the balanced chemical equation DOK 2 (Outcome # 1,2,8,9)

2Al2O3(l) (arrow pointing towards right) 4Al(s) + 3O2(g)?

A) 3

B) 4

C) 6

6

Fewer steps are required to solve stoichiometry problems when (Outcome # 1,2) (DOK 2)

A) the amount of reactant is given in grams and the product is sought in grams.

B) the amount of reactant is given in moles and the product is sought in moles.

C) the amount reactant is given in grams and the product is sought in liters.

the amount of reactant is given in moles and the product is sought in moles.

Ozone, O3, is a product in automobile exhaust by the reaction represented by the equation NO2(g) + O2(g) (arrow pointing towards right) NO(g) + O3(g). What mass of ozone is predicted to form from the reaction of 2.0 g NO2 in a car's exhaust and excess oxygen? (Outcome # 1,2) (DOK 3)

A) 1.1 g O3

B) 1.8 g O3

C) 2.1 g O3

2.1 g O3

A 15.0 g sample of a white, solid substance, is heated in the presence of air. The solid remaining after heating has a mass of 12.6 g. The reaction that took place must have been a/an: (Outcome # 1,2) DOK 3

A) decomposition reaction

B) displacement reaction

C) combination reaction

decomposition reaction

When mixing a strong acid and water together, it is recommended that you do which of the following? (Outcome # 5) (DOK 1)

A) add water to the strong acid

B) add the strong acid to water

C) add them in any order

add the strong acid to water

What are the products when reacting potassium hydroxide and hydrogen chloride? (Outcome # 5) (DOK 2)

A) potassium chloride and water

B) potassium hydroxide and water

C) no reaction

potassium chloride and water

What precipitate forms when mixing copper(II) sulfate and sodium sulfate? (Outcome # 5) (DOK 2)

A) copper(I) sulfate

B) copper(III) sulfate

C) no precipitate forms

no precipitate forms

What precipitate forms when mixing silver(I) nitrate and sodium chloride? (Outcome # 5) (DOK 2) (Paired item 1)

A) silver(I) chloride

B) sodium nitrate

C) no precipitate forms

silver(I) chloride

What precipitate forms when mixing lead(II) nitrate and sodium iodide? (Outcome # 5) (DOK 2) (Paired item 2)

A) sodium nitrate

B) lead(II) iodide

C) no precipitate forms

lead(II) iodide

Which of the following reactions are written correctly? (Outcome # 5) (DOK 2)

A) H2SO4(aq) + 2 NaOH(aq) (arrow pointing towards right) Na2SO4(aq) + 2H2O(l)

B) 2HCl(aq) + K2OH(aq) (arrow pointing towards right) 2KCl(aq) + H2O(l)

C) 2HSO4(aq) + 2NaOH(aq) (arrow pointing towards right) 2NaSO4(aq) + 2H2O(l)

H2SO4(aq) + 2 NaOH(aq) (arrow pointing towards right) Na2SO4(aq) + 2H2O(l)

Which of the following reactions are written correctly? (Outcome # 5) (DOK 2) (Paired item 1)

A) H2NO3(aq) + 2NaOH(aq) (arrow pointing towards right) Na2NO3(aq) + 2H2O(l)

B) HNO3(aq) + K2OH(aq) (arrow pointing towards right) K2NO3(aq) + H2O(l)

C) HNO3(aq) + NaOH(aq) (arrow pointing towards right) NaNO3(aq) + H2O(l)

HNO3(aq) + NaOH(aq) (arrow pointing towards right) NaNO3(aq) + H2O(l)

What is the correct name for the precipitate formed when mixing potassium carbonate and nickel(II) chloride? (Outcome # 2) (DOK 2)

A) potassium chloride

B) nickel(II) carbonate

C) nickel(III) carbonate

nickel(II) carbonate

The reaction HNO3(aq) + NaOH(aq) (arrow pointing towards right) NaNO3(aq) + H2O(l) is an example of _____? (Outcome # 9) (DOK 1)

A) an acid-base reaction

B) a combustion reaction

C) a precipitation reaction

an acid-base reaction

The reaction CH4(g) + 2O2(g) (arrow pointing towards right) CO2(g) + 2H2O(g) is an example of _____? (Outcome # 9) (DOK 1) (Paired item 1)

A) an acid-base reaction

B) a combustion reaction

C) a precipitation reaction

a combustion reaction

Which is the correct balanced reaction for the combustion of octane? (Outcome # 9) (DOK 2)

A) 2C8H18(g) + 25O2(g) (arrow pointing towards right) 16CO2(g) + 18H2O(g)

B) C8H18(g) + 12.5O2(g) (arrow pointing towards right) 8CO2(g) + 9H2O(g)

C) C8H18(g) + 25O(g) (arrow pointing towards right) 8CO2(g) + 9H2O(g)

2C8H18(g) + 25O2(g) (arrow pointing towards right) 16CO2(g) + 18H2O(g)

If 1.50 moles of nitrogen gas reacts with an excess of hydrogen gas, what mass of ammonia would be produced? (Outcome # 9) (DOK 3)

A) 34.1 g

B) 51.1 g

C) 25.5 g

51.1 g

If 250.3 L of hydrogen gas (d = 0.0899 g/L) reacts with an excess of nitrogen gas, what mass of ammonia would be produced? (Outcome # 9) (DOK 3)

A) 253 g

B) 380 g

C) 127 g

127 g

What instrument is used during an acid-base titration experiment to deliver the titrant? (Outcome # 4) (DOK 1)

A) buret

B) syringe

C) pipette

buret

The combustion of 0.136 kg of methane in the presence of excess oxygen produces 353 g of carbon dioxide. What is the percent yield? (Outcome # 8) (DOK 3)

A) 38.5 %

B) 94.6 %

C) 0.946 %

94.6 %

The combustion of 0.374 kg of methane in the presence of excess oxygen produces 0.983 kg of carbon dioxide. What is the percent yield? (Outcome # 8) (DOK 3) (Paired item 1)

A) 38.1 %

B) 95.8 %

C) 0.958 %

95.8 %

What mass of methane is required to produce 1.130 kg of carbon dioxide during combustion? (Assume the reaction undergoes complete combustion.) (Outcome # 8) (DOK 3)

A) 41.18 g

B) 0.4118 g

C) 411.8 g

411.8 g

The combustion of 0.1240 kg of propane in the presence of excess oxygen produces 0.3110 kg of carbon dioxide. What is the theoretical yield? (Outcome # 8) (DOK 3)

A) 371.2 g

B) 0.8377 g

C) 0.3712 g

371.2 g

Which is the correct balanced reaction for the combustion of octane? (Outcome # 8) (DOK 2)

A) 2C8H18(l) + 25O2(g) (arrow pointing towards right) 16CO2(g) + 18H2O(g)

B) C8H18(l) + 25O(g) (arrow pointing towards right) 8CO2(g) + 9H2O(g)

C) C8H18(l) + 12.5O2(g) (arrow pointing towards right) 8CO2(g) + 9H2O(g)

2C8H18(l) + 25O2(g) (arrow pointing towards right) 16CO2(g) + 18H2O(g

Which is the correct balanced reaction for the combustion of methane? (Outcome # 8) (DOK 2) (Paired item 1)

A) CH4(g) + O2(g) (arrow pointing towards right) CO2(g) + H2O(g)

B) CH4(g) + 4O(g) (arrow pointing towards right) CO2(g) + 2H2O(g)

C) CH4(g) + 2O2(g) (arrow pointing towards right) CO2(g) + 2H2O(g)*

CH4(g) + 2O2(g) (arrow pointing towards right) CO2(g) + 2H2O(g)

Write a balanced reaction for the neutralization of HBr upon the addition of KOH. (Outcome # 8) (DOK 2)

A) HBr(aq) + KOH(aq) (arrow pointing towards right) KBr(aq) + H2O(l)

B) HBr(aq) + KOH(aq) (arrow pointing towards right) KBr(s) + H2O(l)

C) HBr(aq) + KOH(aq) (arrow pointing towards right) KBr(l) + H2O(l)

HBr(aq) + KOH(aq) (arrow pointing towards right) KBr(aq) + H2O(l)

The combustion of 0.296 kg of propane produces 713 g of carbon dioxide. What is the percent yield? (Outcome # 8) (DOK 3)

A) 80.5 %

B) 0.805 %

C) 124 %

80.5 %

0.450 kg of octane burned during combustion produces 1.25 kg of carbon dioxide. What is the percent yield? (Outcome # 8) (DOK 3)

A) 0.901 %

B) 90.1 %

C) 36.0%

90.1 %

How many moles of HCl are needed to completely react with 50.0 mL of 0.250 M NaOH solution? (Outcome # 8) (DOK 2)

A) 1.25 x 10-2 moles

B) 1.25 x 10^1 moles

C) 2.50 x 10-1 moles

1.25 x 10-2 moles

How many moles of KOH are needed to neutralize 35.0 mL of 0.115 M HNO3 solution? (Outcome # 8) (DOK 2)

A) 4.03 x 10-3 moles

B) 4.03 x 10^1 moles

C) 1.15 x 10-1 moles

4.03 x 10-3 moles

How many moles of NaOH are needed to neutralize 15.0 mL of 0.235 M HCl solution? (Outcome # 8) (DOK 2) (Paired item 1)

A) 3.53 x 10^1 moles

B) 2.35 x 10-1 moles

C) 3.53 x 10-3 moles

3.53 x 10-3 moles

What is the oxidation number of Cr in a dichromate anion? (Outcome # 8) (DOK 2)

A) +6

B) +3

C) +2

+6

What is the oxidation number of Mn in a permanganate anion? (Outcome # 8) (DOK 2)

A) +4

B) +7

C) +2

+7

How many electrons are transferred during the oxidation of iron metal to form rust? (Outcome # 8) (DOK 2)

A) 3 electrons

B) 6 electrons

C) 12 electrons

12 electrons

What is the oxidation number of free elements? (Outcome # 8) (DOK 1)

A) 0

B) +1

C) +2

0

What is the oxidation number of diatomic elements? (Outcome # 8) (DOK 1)

A) 0

B) +1

C) +2

0

What is the oxidation number of hydrogen in H2O2? (Outcome # 8) (DOK 1)

A) +2

B) +1

C) 0

+1

What is the oxidation number of oxygen in H2O2? (Outcome # 8) (DOK 2)

A) -2

B) -1

C) 0

-1

What is the net ionic equation for the reaction between CoCl2 and an alkali hydroxide? (Outcome # 3) (DOK 2)

A) Co2+(aq) + 2OH-(aq) (arrow pointing towards right) Co(OH)2(s)

B) Na+(aq) + Cl-(aq) (arrow pointing towards right) NaCl(s)

C) Co3+(aq) + 3OH-(aq) (arrow pointing towards right) Co(OH)3(s)

Co2+(aq) + 2OH-(aq) (arrow pointing towards right) Co(OH)2(s)

Write the net ionic equation for a reaction between a strong acid and strong base. (Outcome # 3) (DOK 3)

A) HCl(aq) + NaOH(aq) (arrow pointing towards right) NaCl(aq) + H2O(l)

B) H+(aq) + OH-(aq) (arrow pointing towards right) H2O(l)

C) H2O(l) (arrow pointing towards right) H+(aq) + OH-(aq)

H+(aq) + OH-(aq) (arrow pointing towards right) H2O(l)

Identify the reactants in the following reaction: 2 CH3OH(l) + 3 O2(g) (arrow pointing towards right) 2 CO2(g) + 4 H2O(g) (Outcome # 6) (DOK 1)

A) CH3OH

B) CH3OH and O2

C) CO2 and H2O

CH3OH and O2

If 23.6 g of hydrogen gas reacts with 28.3 g of nitrogen gas, what is the maximum amount of product that can be produced? (Outcome # 6) (DOK 3)

A) 34.4 g

B) 133 g

C) 68.8 g

34.4 g

The catalytic decomposition of hydrogen peroxide occurs with the addition of KI. If 10 mL of a saturated KI solution was added to 315 g of hydrogen peroxide, how much oxygen gas would be produced? (Outcome # 6) (DOK 3)

A) 296 g

B) 593 g

C) 148 g

148 g

What is the oxidation number of oxygen gas in the combustion of pentane reaction? (Outcome # 6) (DOK 3)

A) 0

B) -1

C) -2

0

Which is the reducing agent in the combustion of methanol? (Outcome # 6) (DOK 3)

A) CH3OH

B) O2

C) CO2

CH3OH

Which is the oxidizing agent in the combustion of methanol? (Outcome # 6) (DOK 3)

A) CH3OH

B) O2

C) CO2

O2

Propane is used as a fuel source on many barbeque grills. What is undergoing oxidation during the burning of propane while grilling? (Outcome # 6) (DOK 3)

A) CH3CH2CH3

B) O2

C) CO2

CH3CH2CH3

Propane is used as a fuel source on many barbeque grills. What is undergoing reduction during the burning of propane while grilling? (Outcome # 6) (DOK 3) (Paired item 1)

A) CH3CH2CH3

B) O2

C) CO2

O2

When a salt is dissolved in water, it is represented by the following notation in a chemical reaction? (Outcome # 6) (DOK 1)

A) (aq)

B) (l)

C) (s)

(aq)

How is a solid phase represented in a chemical reaction? (Outcome # 6) (DOK 1)

A) (s)

B) (g)

C) (l)

(s)

How is a liquid phase represented in a chemical reaction? (Outcome # 6) (DOK 1)

A) (s)

B) (g)

C) (l)

(l)

How is a gas phase represented in a chemical reaction? (Outcome # 6) (DOK 1)

A) (s)

B) (g)

C) (l)

(g)

The reaction NH3(aq) + H2O(l) (arrow pointing towards right) OH-(aq) + NH4+(aq) is an example of _____? (Outcome # 9) (DOK 1)

A) a combustion reaction

B) an acid-base reaction

C) a precipitation reaction

an acid-base reaction

Which of the following is a strong acid? (Outcome # 1,3,9) (DOK 1)

A) HNO3

B) CaSO4

C) NH3

HNO3

Which of the following is a strong acid when mixed in water? (Outcome # 1,5,9) (DOK 2)

A) HClO

B) HBr*

C) HNO2

HBr

When Ca(OH)2 reacts with H2SO4 what are the products? (Outcome # 1,5,6,9) (DOK 2)

A) Ca(OH)2 and H2SO4

B) CaSO4 and H2O

C) CaO and H2SO4

CaSO4 and H2O

What are the products of the reaction between barium hydroxide and hydrogen chloride? (Outcome # 1,5,6,9) (DOK 2)

A) barium chloride and water

B) barium hydroxide and water

C) barium chloride and barium hydride

barium chloride and water

The symbol that separates the reactants from products in a reaction and means "to yield" is ________. (Outcome # 1,5,6,9) (DOK 1)

A) +

B) (s)

C) (arrow pointing towards right)

(arrow pointing towards right)

The chemical reaction CaCO3 (arrow pointing towards right) CaO + CO2 is classified as a (Outcome # 1,5,9) (DOK 1)

A) synthesis reaction

B) decomposition reaction

C) single-replacement reaction

decomposition reaction

What is the correct name for the salt formed between KOH and HCl? (Outcome # 9) (DOK 2)

A) potassium hydride

B) potassium chloride

C) potassium hydroxide

potassium chloride

What is the correct formula for the precipitate formed between NaNO3 and mercury nitrate? (Outcome # 9) (DOK 3)

A) Hg2NO3

B) Hg(NO3)2

C) no reaction between NaNO3 and mercury nitrate

no reaction between NaNO3 and mercury nitrate

Which compound is insoluble in water? (Outcome # 2) (DOK 2)

A) CaCO3

B) LiOH

C) Na2S

CaCO3

In a chemical reaction, the right side of the yield arrow is where the _____ can be found. (Outcome # 2) (DOK 1)

A) reactants

B) products

C) both reactant and products

products

The coefficients in front of the substances in a chemical reaction indicate the number of each type of _____. (Outcome # 2) (DOK 1)

A) ionic bond

B) covalent bond

C) molecule

molecule

When balancing a chemical reaction, the following may need to be changed? (Outcome # 2) (DOK 1)

A) subscripts

B) coefficients

C) phases

coefficients

What is the oxidation state of oxygen in H2O2? (Outcome # 2) (DOK 2)

A) 0

B) -1

C) -2

-1

Which of the following is a weak acid? (Outcome # 2) (DOK 1)

A) acetic acid

B) sulfuric acid

C) perchloric acid

acetic acid

Which of the following is a weak base? (Outcome # 2) (DOK 1)

A) sodium hydroxide

B) potassium hydroxide

C) ammonia

ammonia

Hydrogen gas can react with some halogen to produce hydrogen chloride. Write a correct balanced reaction and identify the oxidizing agent. (Outcome # 2) (DOK 3)

A) H2(g) + Cl2(g) (arrow pointing towards right) 2HCl(g) and Cl2 is the oxidizing agent

B) H2(g) + Cl2(g) (arrow pointing towards right) 2HCl(g) and H2 is the oxidizing agent

C) H2(g) + Cl2(g) (arrow pointing towards right) 2HCl(g) and HCl is the oxidizing agent

H2(g) + Cl2(g) (arrow pointing towards right) 2HCl(g) and Cl2 is the oxidizing agent

Which of the following is a redox reaction? (Outcome # 2) (DOK 2)

A) Zn(s) + 2 HCl(aq) (arrow pointing towards right) ZnCl2(aq) + H2(g)

B) HNO3(aq) + KOH(aq) (arrow pointing towards right) KNO3(aq) + H2O(l)

C) ZnSO4(aq) + Hg2(NO3)2(aq) (arrow pointing towards right) Hg2SO4(s) + Zn(NO3)2(aq)

Zn(s) + 2 HCl(aq) (arrow pointing towards right) ZnCl2(aq) + H2(g)

Which of the following is an acid-base reaction? (Outcome # 2) (DOK 2)

A) Mg(s) + 2HCl(aq) (arrow pointing towards right) MgCl2(aq) + H2(g)

B) HClO4(aq) + NaOH(aq) (arrow pointing towards right) NaClO4(aq) + H2O(l)

C) Pb(NO3)2(aq) + 2KI(aq) (arrow pointing towards right) PbI2(s) + 2KNO3(aq)

HClO4(aq) + NaOH(aq) (arrow pointing towards right) NaClO4(aq) + H2O(l)

Which of the following is a precipitation reaction? (Outcome # 2) (DOK 2)

A) Ca(s) + 2HCl(aq) (arrow pointing towards right) CaCl2(aq) + H2(g)

B) H2SO4(aq) + 2NaOH(aq) (arrow pointing towards right) Na2SO4(aq) + 2H2O(l)

C) 2NaOH(aq) + MgCl2(aq) (arrow pointing towards right) 2 NaCl(aq) + Mg(OH)2(s)

2NaOH(aq) + MgCl2(aq) (arrow pointing towards right) 2 NaCl(aq) + Mg(OH)2(s)

Solid potassium chlorate readily decomposes in the presence of a catalyst and heat to form oxygen gas and potassium salt. What is the correct balanced reaction? (Outcome # 5) (DOK 3)

A) 2KClO3(s) (arrow pointing towards right) 2KCl(s) + 3O2(g)

B) KClO4(s) (arrow pointing towards right) KCl(s) + 2O2(g)

C) KClO3(s) (arrow pointing towards right) KCl(s) + 3O(g)

2KClO3(s) (arrow pointing towards right) 2KCl(s) + 3O2(g)

Hydrogen peroxide readily decomposes in the presence of a catalyst to form oxygen gas and water. What is the correct balanced reaction? (Outcome # 5) (DOK 3)

A) 4HO2(aq) (arrow pointing towards right) 3O2(g) + 2H2O(l)

B) H2O2(aq) (arrow pointing towards right) O(g) + H2O(l)

C) 2H2O2(aq) (arrow pointing towards right) O2(g) + 2H2O(l)

2H2O2(aq) (arrow pointing towards right) O2(g) + 2H2O(l)

The combustion of propane produced 8.53 g of carbon dioxide. What mass of propane is required if the yield is 93 %. (Outcome # 5) (DOK 3)

A) 3.06 g

B) 9.19 g

C) 27.6 g

3.06 g

The combustion of butane produced 0.0243 kg of carbon dioxide. What mass of butane is required if the yield is 89 %. (Outcome # 5) (DOK 3) (Paired item 1)

A) 36.1 g

B) 9.01 g

C) 144.2 g

9.01 g

A reaction with an unknown theoretical yield was carried out and the amount of product obtained was a third of the theoretical yield. What is the percent yield? (Outcome # 5) (DOK 3)

A) 33.3 %

B) 66.6 %

C) cannot be determined

33.3 %

A reaction with an unknown percent yield was carried out and the amount of product obtained was a fourth of the theoretical yield. What is the percent yield? (Outcome # 5) (DOK 3) (Paired item 1)

A) 75.0 %

B) 25.0 %

C) cannot be determined

25.0 %

What is the density of a 0.354 M solution of ammonium phosphate? (Outcome # 7) (DOK 3)

A) 0.0523 g/mL

B) 5.23 g/mL

C) 52.3 g/mL

0.0523 g/mL

What is the mass of ammonium chloride is 500.0 mL of a 0.198 M solution? (Outcome # 7) (DOK 3)

A) 10.6 g

B) 5.30 g

C) 5.30 x 10^3 g

5.30 g

How many μL are in 0.239 mL of solvent? (Outcome # 7) (DOK 1)

A) 2.39 x 10^5 μL

B) 2.39 x 10^2 μL

C) 2.39 x 10-5 μL

2.39 x 10^2 μL

How many grams are in an 81 mg aspirin sample? (Outcome # 7) (DOK 1)

A) 0.081 g

B) 0.81 g

C) 8.1 g

0.081 g

What is the product of hydrogen gas and oxygen gas? (Outcome # 8) (DOK 2)

A) H2O2

B) H2O

C) H3O+

H2O

Classify the following type of reaction: Mg(s) + 2HCl(aq) (arrow pointing towards right) MgCl2(aq) + H2(g). (Outcome # 3) (DOK 1)

A) redox reaction

B) combustion reaction

C) acid/base reaction

redox reaction

Classify the following type of reaction: C3H8(l) + 5O2(g) (arrow pointing towards right) 3CO2(g) + 4H2O(g). (Outcome # 3) (DOK 1)

A) redox reaction

B) combustion reaction

C) acid/base reaction

combustion reaction

Classify the following type of reaction: NaCl(aq) + AgNO3(aq) (arrow pointing towards right) AgCl(s) + NaNO3(aq). (Outcome # 3) (DOK 1)

A) redox reaction

B) acid/base reaction

C) precipitation reaction

precipitation reaction

Balance the following reaction: CaO + C (arrow pointing towards right) CaC2 + CO2. (Outcome # 3) (DOK 1)

A) CaO2 + 3C (arrow pointing towards right) CaC2 + CO2

B) 2CaO2 + 6C (arrow pointing towards right) 2CaC2 + 2CO2

C) 2CaO + 5C (arrow pointing towards right) 2CaC2 + CO2

2CaO + 5C (arrow pointing towards right) 2CaC2 + CO2

Ammonia reacts with oxygen in the air. Write a balanced chemical reaction. (Outcome # 3) (DOK 2)

A) 4NH3(g) + 5O2(g) (arrow pointing towards right) 4NO(g) + 6H2O(l)

B) 2NH3(g) + 5O(g) (arrow pointing towards right) 2NO(g) + 3H2O(l)

C) 2NH3(g) + 3O2(g) (arrow pointing towards right) 2H3NO3(aq)

4NH3(g) + 5O2(g) (arrow pointing towards right) 4NO(g) + 6H2O(l)

What is the percent yield of a reaction if the product recovered is 89.4 g and the theoretical yield is 128.4 g? (Outcome # 4) (DOK 1)

A) 144 %

B) 69.6 %

C) 0.696 %

69.6 %

What is the percent yield of a reaction if the product recovered is 21.2 g and the theoretical yield is 28.4 g? (Outcome # 4) (DOK 1) (Paired item 1)

A) 74.6 %

B) 134 %

C) 0.746 %

74.6 %

What is the percent yield of a reaction if the actual yield is 80.6 % of the 42.4 g theoretical yield? (Outcome # 4) (DOK 2)

A) 34.2 %

B) 19.4 %

C) 80.6 %

80.6 %

What is the theoretical yield of a reaction if the percent yield 92.4 % and product recovered is 89.3 g? (Outcome # 4) (DOK 2)

A) 89.3 g

B) 96.6 g

C) 82.5 g

96.6 g

What is the limiting reactant in the combustion of 159 g of methane in an open atmosphere? (Outcome # 4) (DOK 1)

A) methane

B) oxygen

C) carbon dioxide

methane

What is the excess reactant in the combustion of 211 g of methane in an open atmosphere? (Outcome # 4) (DOK 1)

A) water

B) methane

C) oxygen

oxygen

How many moles are in 1.25 g of calcium chloride? (Outcome # 4) (DOK 1)

A) 8.88 x 10^1 moles

B) 1.39 x 10^2 moles

C) 1.13 x 10-2 moles

1.13 x 10-2 moles