Deck 9: Chemical Equation Calculations

Question 1

What term refers to the amount of product experimentally measured in a laboratory procedure?

A)actual yield
B)percent yield
C)stoichiometric yield
D)theoretical yield
E)none of the above

Answer 1

actual yield

Question 2

Assuming similar conditions,how many liters of carbon monoxide gas react to produce 2 L of carbon dioxide gas? 2 CO(g)+ O₂(g) 2 CO₂(g)

A)1 L
B)2 L
C)3 L
D)4 L
E)none of the above

Answer 2

2 L

Question 3

How many moles of carbon monoxide react with 1 mol of oxygen gas according to the balanced chemical equation? 2 CO(g)+ O₂(g) 2 CO₂(g)

A)1 mol
B)2 mol
C)3 mol
D)4 mol
E)none of the above

Answer 3

2 mol

Question 4

What term refers to a type of stoichiometry calculation that relates the mass of a substance to the volume of a gas according to a balanced chemical equation?

A)mass-mass problem
B)mass-volume problem
C)mole-mole problem
D)volume-volume problem
E)none of the above

Question 5

What is the term for the actual yield compared to the theoretical yield expressed as a percent?

A)experimental yield
B)percent yield
C)ratio yield
D)stoichiometric yield
E)none of the above

Question 6

What principle states that equal volumes of gases,at the same temperature and pressure,contain equal numbers of molecules?

A)Avogadro's theory
B)law of combining volumes
C)law of conservation of mass
D)law of constant composition
E)none of the above

Question 7

How many moles of chlorine gas react with 1 mol of hydrogen gas according to the balanced chemical equation? H₂(g)+ Cl₂(g)→ 2 HCl(g)

A)1 mol
B)2 mol
C)3 mol
D)4 mol
E)none of the above

Question 8

What term refers to a type of stoichiometry calculation that relates the volumes of two gases according to a balanced chemical equation?

A)mass-mass problem
B)mass-volume problem
C)mole-mole problem
D)volume-volume problem
E)none of the above

Question 9

What term refers to a type of stoichiometry calculation that relates the masses of two substances according to a balanced chemical equation?

A)mass-mass problem
B)mass-volume problem
C)mole-mole problem
D)volume-volume problem
E)none of the above

Question 10

What is the term for the amount of product calculated to be obtained from a given amount of reactant?

A)actual yield
B)percent yield
C)stoichiometric yield
D)theoretical yield
E)none of the above

Question 11

What principle states the volumes of gases that combine in a chemical reaction are in the ratio of small whole numbers?

A)Avogadro's theory
B)law of combining volumes
C)law of conservation of volume
D)law of constant conditions
E)none of the above

Question 12

What is the term for a temperature of 0 °C and a pressure of 1 atm?

A)atmospheric temperature and pressure
B)experimental temperature and pressure
C)ideal gas temperature and pressure
D)standard temperature and pressure
E)none of the above

Question 13

Assuming similar conditions,how many liters of chlorine gas react to produce 2 L of hydrogen chloride gas? H₂(g)+ Cl₂(g)→ 2 HCl(g)

A)1 L
B)2 L
C)3 L
D)4 L
E)none of the above

Question 14

What principle states that mass is neither gained or lost during a chemical reaction?

A)Avogadro's theory
B)law of combining volumes
C)law of conservation of mass
D)law of constant composition
E)none of the above

Question 15

What term expresses the ratio of moles of reactants and products according to the coefficients in the balanced chemical equation?

A)mole ratio
B)reactant ratio
C)product ratio
D)yield ratio
E)none of the above

Question 16

What term refers to the mass of 1 mol of substance expressed in grams?

A)gram-atomic mass
B)gram-molecular mass
C)gram-formula mass
D)molar mass
E)none of the above

Question 17

How many moles of steam,H₂O,react with 1 mol of charcoal,C,according to the balanced chemical equation? C(s)+ H₂O(g) CO(g)+ H₂(g)

A)1 mol
B)2 mol
C)3 mol
D)4 mol
E)none of the above

Question 18

What is the term for the substance in a chemical reaction that controls the maximum amount of product?

A)limiting reactant
B)limiting product
C)maximum reactant
D)maximum product
E)none of the above

Question 19

What term refers to the volume occupied by 1 mol of any gas at STP?

A)Avogadro's volume
B)molar volume
C)standard volume
D)STP volume
E)none of the above

Question 20

What is the term for the relationship of quantities (i.e. ,mass of substance or volume of gas)in a chemical reaction according to the balanced chemical equation?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)stoichiometry
E)none of the above

Question 21

In an experiment,0.243 g of magnesium reacts to give 0.403 g magnesium oxide.Using the conservation of mass law,predict the mass of reacting oxygen gas. 2 Mg(s)+ O₂(g) 2 MgO(s)

A)0.080 g
B)0.160 g
C)0.320 g
D)0.646 g
E)1.292 g

Question 22

How many moles of iodine vapor react with 1.00 mol of hydrogen gas? __H₂(g)+ __I₂(g) __HI(g)

A)0.500 mol
B)1.00 mol
C)2.00 mol
D)4.00 mol
E)none of the above

Question 23

How many moles of hydrogen iodide are produced from 1.00 mol of iodine? __H₂(g)+ __I₂(g) __HI(g)

A)0.500 mol
B)1.00 mol
C)2.00 mol
D)4.00 mol
E)none of the above

Question 24

In an experiment,0.327 g of zinc metal reacts to produce 0.407 g of zinc oxide.Using the conservation of mass law,predict the mass of reacting oxygen gas. 2 Zn(s)+ O₂(g) 2 ZnO(s)

A)0.040 g
B)0.080 g
C)0.160 g
D)0.734 g
E)1.468 g

Question 25

How many moles of water react with 5.00 mol of lithium metal? __Li(s)+ __H₂O(l)→ __LiOH(aq)+ __H₂(g)

A)2.50 mol
B)5.00 mol
C)10.0 mol
D)20.0 mol
E)none of the above

Question 26

In an experiment,5.585 g of iron metal reacts with 3.207 g of yellow sulfur.Using the conservation of mass law,predict the mass of product. Fe(s)+ S(s) FeS(s)

A)2.198 g
B)2.378 g
C)4.396 g
D)8.792 g
E)17.584 g

Question 27

How many moles of water are produced from 1.00 mol of hydrogen peroxide? __H₂O₂(l) __H₂O(l)+ __O₂(g)

A)0.500 mol
B)1.00 mol
C)2.00 mol
D)4.00 mol
E)none of the above

Question 28

How many moles of nitrogen dioxide gas are produced from 1.00mol NO? __NO(g)+ __O₂(g) __NO₂(g)

A)0.250 mol
B)0.500 mol
C)1.00 mol
D)2.00 mol
E)none of the above

Question 29

In an experiment,0.520 g of chromium metal reacts with 3.807 g of iodine.Using the conservation of mass law,predict the mass of product. 2 Cr(s)+ 3 I₂(s) 2 CrI₃(s)

A)1.529 g
B)3.287 g
C)4.327 g
D)8.654 g
E)12.461 g

Question 30

How many moles of oxygen gas react with 1.00 mol NO? __NO(g)+ __O₂(g) __NO₂(g)

A)0.250 mol
B)0.500 mol
C)1.00 mol
D)2.00 mol
E)none of the above

Question 31

How many moles of hydrogen peroxide decompose to give 1.00 mol of oxygen? __H₂O₂(l) __H₂O(l)+ __O₂(g)

A)0.500 mol
B)1.00 mol
C)2.00 mol
D)4.00 mol
E)none of the above

Question 32

In an experiment,1.201 g of charcoal reacts with 6.414 g of powdered sulfur.Using the conservation of mass law,predict the mass of product. C(s)+ 2 S(s) CS₂(g)

A)4.408 g
B)5.213 g
C)7.615 g
D)8.816 g
E)14.029 g

Question 33

Assuming similar conditions,how many liters of steam,H₂O,react to produce 1 L of hydrogen gas? C(s)+ H₂O(g) CO(g)+ H₂(g)

A)1 L
B)2 L
C)3 L
D)4 L
E)none of the above

Question 34

How many moles of hydrogen gas are produced from 5.00 mol of water? __Li(s)+ __H₂O(l)→ __LiOH(aq)+ __H₂(g)

A)2.50 mol
B)5.00 mol
C)10.0 mol
D)20.0 mol
E)none of the above

Question 35

How many moles of lithium metal react to yield 5.00 mol of hydrogen gas? __Li(s)+ __H₂O(l)→ __LiOH(aq)+ __H₂(g)

A)2.50 mol
B)5.00 mol
C)10.0 mol
D)20.0 mol
E)none of the above

Question 36

How many moles of water react with 0.500 mol of calcium metal? __Ca(s)+ __H₂O(l)→ __Ca(OH)2(aq)+ __H₂(g)

A)0.250 mol
B)0.500 mol
C)1.00 mol
D)2.00 mol
E)none of the above

Question 37

How many moles of oxygen gas react to yield 1.00 mol NO₂? __NO(g)+ __O₂(g) __NO₂(g)

A)0.250 mol
B)0.500 mol
C)1.00 mol
D)2.00 mol
E)none of the above

Question 38

How many moles of oxygen are produced from 1.00 mol of hydrogen peroxide? __H₂O₂(l) __H₂O(l)+ __O₂(g)

A)0.500 mol
B)1.00 mol
C)2.00 mol
D)4.00 mol
E)none of the above

Question 39

In an experiment,0.197 g of gold metal reacts to yield 0.303 g of gold(III)chloride.Using the conservation of mass law,predict the mass of reacting chlorine gas. 2 Au(s)+ 3 Cl₂(g) 2 AuCl3(s)

A)0.035 g
B)0.106 g
C)0.318 g
D)0.167 g
E)0.500 g

Question 40

How many moles of hydrogen gas react to yield 1.00 mol of hydrogen iodide? __H₂(g)+ __I₂(g) __HI(g)

A)0.500 mol
B)1.00 mol
C)2.00 mol
D)4.00 mol
E)none of the above

Question 41

In general,how many unit factors are required to solve a mass-volume stoichiometry problem?

A)one
B)two
C)three
D)four
E)none of the above

Question 42

In general,how many unit factors are required to solve a volume-mass stoichiometry problem?

A)one
B)two
C)three
D)four
E)none of the above

Question 43

Which of the following steps is necessary to solve a volume-volume stoichiometry problem?

A)Write a balanced chemical equation for the reaction.
B)Determine the ratio of gas volumes from the balanced equation.
C)Donvert the volume of known gas to volume of unknown gas.
D)all of the above
E)none of the above

Question 44

Classify the following type of stoichiometry problem: How many grams of aluminum must react with an excess volume of nitric acid to yield 0.500 g of aluminum nitrate?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 45

Classify the following type of stoichiometry problem: How many grams of zinc must react with an excess volume of hydrochloric acid to yield 0.500 g of zinc chloride?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 46

Which of the following steps is necessary to solve a mass-mass stoichiometry problem?

A)Write a balanced equation for the reaction.
B)Calculate the moles of known substance.
C)Convert moles of known to moles of unknown.
D)Calculate the mass of unknown substance.
E)all of the above

Question 47

How many moles of calcium metal react to yield 0.500 mol of hydrogen gas? __Ca(s)+ __H₂O(l)→ __Ca(OH)2(aq)+ __H₂(g)

A)0.250 mol
B)0.500 mol
C)1.00 mol
D)2.00 mol
E)none of the above

Question 48

Classify the following type of stoichiometry problem: How many liters of carbon monoxide gas react with an excess volume of oxygen to give 125 mL of carbon dioxide gas?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 49

How many moles of hydrogen gas are produced from 0.500 mol of water? __Ca(s)+ __H₂O(l)→ __Ca(OH)2(aq)+ __H₂(g)

A)0.250 mol
B)0.500 mol
C)1.00 mol
D)2.00 mol
E)none of the above

Question 50

How many moles of water are produced from 0.100 mol pentane,C5H₁₂? __C5H₁₂ (g)+ __O₂(g) __CO₂(g)+ __H₂O(g)

A)0.100 mol
B)0.500 mol
C)0.600 mol
D)0.800 mol
E)none of the above

Question 51

Classify the following type of stoichiometry problem: How many milliliters of nitrogen monoxide gas react with an excess mass of oxygen gas to give 50.0 cm3 of nitrogen dioxide gas?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 52

Classify the following type of stoichiometry problem: How many grams of tin must react with an excess volume of nitric acid to produce 50.0 mL of hydrogen gas?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 53

In general,how many unit factors are required to solve a mass-mass stoichiometry problem?

A)one
B)two
C)three
D)four
E)none of the above

Question 54

How many moles of oxygen gas react to yield 0.100 mol water? __C5H₁₂ (g)+ __O₂(g) __CO₂(g)+ __H₂O(g)

A)0.100 mol
B)0.500 mol
C)0.600 mol
D)0.800 mol
E)none of the above

Question 55

Classify the following type of stoichiometry problem: How many cubic centimeters of carbon dioxide gas are produced from heating 0.750 g of baking soda?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 56

Classify the following type of stoichiometry problem: How many grams of nickel must react with an excess volume of sulfuric acid to yield 0.500 g of nickel(II)sulfate?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 57

Classify the following type of stoichiometry problem: How many milliliters of hydrogen gas react with an excess mass of chlorine gas to give 250 mL of hydrogen chloride?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 58

Which of the following steps is necessary to solve a mass-volume stoichiometry problem?

A)Write a balanced equation for the reaction.
B)Calculate the moles of known substance.
C)Convert moles of known to moles of unknown.
D)Calculate the volume of unknown gas.
E)all of the above

Question 59

How many moles of oxygen gas react with 0.100 mol of pentane,C5H₁₂? __C5H₁₂ (g)+ __O₂(g) __CO₂(g)+ __H₂O(g)

A)0.100 mol
B)0.500 mol
C)0.600 mol
D)0.800 mol
E)none of the above

Question 60

Classify the following type of stoichiometry problem: How many grams of cobalt must react with an excess volume of hydrochloric acid to produce 25.0 mL of hydrogen gas?

A)mass-mass problem
B)mass-volume problem
C)volume-volume problem
D)mole-mole problem
E)none of the above

Question 61

What is the mass of aluminum metal that reacts to give 1.00 g of hydrogen gas? __Al(s)+ __HCl(aq)→ __AlCl3(aq)+ __H₂(g)

A)4.46 g
B)8.90 g
C)13.4 g
D)20.0 g
E)26.7 g

Question 62

What is the volume of oxygen gas at STP from the decomposition of 10.8 g of mercuric oxide (216.59 g/mol)? __HgO(s) __Hg(l)+ __O₂(g)

A)0.558 L
B)1.12 L
C)2.23 L
D)52.2 L
E)209 L

Question 63

What is the mass of insoluble silver bromide (187.77 g/mol)produced from 2.96 g of iron(III)bromide (295.55 g/mol)and aqueous silver nitrate? __FeBr3(s)+ __AgNO₃(aq)→ __AgBr(s)+ __Fe(NO₃)3(aq)

A)0.940 g
B)0.627 g
C)1.88 g
D)5.64 g
E)3.76 g

Question 64

What is the mass of copper metal that yields 0.500 g of silver? __Cu(s)+ __AgNO₃(aq)→ __Cu(NO₃)2(aq)+ __Ag(s)

A)0.147 g
B)0.294 g
C)0.425 g
D)0.589 g
E)1.70 g

Question 65

What is the volume of oxygen gas at STP from the decomposition of 1.70 g of sodium nitrate (85.00 g/mol)? __NaNO₃(s) __NaNO₂(s)+ __O₂(g)

A)0.224 L
B)0.448 L
C)0.896 L
D)3.23 L
E)12.9 L

Question 66

What is the mass of aluminum metal that reacts to give 11.1 g of manganese metal? __MnO₂(l)+ __Al(l) __Mn(l)+ __Al₂O₃(s)

A)3.64 g
B)4.09 g
C)5.45 g
D)7.27 g
E)8.18 g

Question 67

What is the mass of iron(III)bromide (295.55 g/mol)that yields 0.188 g of silver bromide (187.77 g/mol)precipitate? __FeBr3(s)+ __AgNO₃(aq)→ __AgBr(s)+ __Fe(NO₃)3(aq)

A)0.0986 g
B)0.148 g
C)0.296 g
D)0.592 g
E)0.888 g

Question 68

What is the mass of aluminum metal that reacts to give 1.00 g of iron? __FeO(l)+ __Al(l) __Fe(l)+ __Al₂O₃(s)

A)0.322 g
B)0.483 g
C)0.725 g
D)0.966 g
E)1.449 g

Question 69

What is the mass of aluminum oxide (101.96 g/mol)produced from 1.74 g of manganese(IV)oxide (86.94 g/mol)? __MnO₂(l)+ __Al(l) __Mn(l)+ __Al₂O₃(s)

A)0.988 g
B)1.36 g
C)2.04 g
D)2.22 g
E)3.06 g

Question 70

What is the mass of mercuric oxide (216.59 g/mol)that decomposes to release 0.750L of oxygen gas at STP? __HgO(s) __Hg(l)+ __O₂(g)

A)0.0388 g
B)0.155 g
C)3.63 g
D)7.25 g
E)14.5 g

Question 71

What is the mass of insoluble calcium phosphate (310.18 g/mol)produced from 0.555 g of calcium chloride (110.98 g/mol)? __CaCl₂(s)+ __Na3PO₄(aq)→ __Ca3(PO₄)2(s)+ __NaCl(aq)

A)0.0662 g
B)0.517 g
C)0.596 g
D)1.55 g
E)4.65 g

Question 72

What is the mass of potassium iodide (166.00 g/mol)that yields 0.500 g of lead(II)iodide (461.0 g/mol)precipitate? __Pb(NO₃)2(aq)+ __KI(s)→ __PbI₂(s)+ __KNO₃(aq)

A)0.0900 g
B)0.180 g
C)0.360 g
D)0.694 g
E)2.78 g

Question 73

What is the mass of silver metal produced from 6.35 g of copper? __Cu(s)+ __AgNO₃(aq)→ __Cu(NO₃)2(aq)+ __Ag(s)

A)0.187 g
B)0.540 g
C)0.747 g
D)1.08 g
E)21.6 g

Question 74

What is the mass of sodium phosphate (163.94 g/mol)that yields 1.00 g of calcium phosphate (310.18 g/mol)precipitate? __CaCl₂(s)+ __Na3PO₄(aq)→ __Ca3(PO₄)2(s)+ __NaCl(aq)

A)0.264 g
B)0.358 g
C)0.931 g
D)1.06 g
E)8.38 g

Question 75

In general,how many unit factors are required to solve a volume-volume stoichiometry problem?

A)one
B)two
C)three
D)four
E)none of the above

Question 76

What is the mass of insoluble lead(II)iodide (461.0 g/mol)produced from 0.830 g of potassium iodide (166.00 g/mol)and aqueous lead(II)nitrate? __Pb(NO₃)2(aq)+ __KI(s)→ __PbI₂(s)+ __KNO₃(aq)

A)0.149 g
B)0.598 g
C)1.15 g
D)2.31 g
E)4.61 g

Question 77

What is the mass of sodium nitrate (85.00 g/mol)that decomposes to release 2.55 L of oxygen gas at STP? __NaNO₃(s) __NaNO₂(s)+ __O₂(g)

A)0.336 g
B)1.34 g
C)4.84 g
D)9.68 g
E)19.4 g

Question 78

What is the mass of aluminum oxide (101.96 g/mol)produced from 3.59 g of iron(II)oxide (71.85 g/mol)? __FeO(l)+ __Al(l) __Fe(l)+ __Al₂O₃(s)

A)0.842 g
B)1.70 g
C)5.10 g
D)7.58 g
E)15.3 g

Question 79

What is the mass of hydrogen gas released from 2.70 g of aluminum metal and hydrochloric acid? __Al(s)+ __HCl(aq)→ __AlCl3(aq)+ __H₂(g)

A)0.101 g
B)0.135 g
C)0.202 g
D)0.303 g
E)0.606 g

Question 80

What is the volume of oxygen gas at STP from the decomposition of 9.57 g of silver chlorate (191.32 g/mol)? __AgClO₃(s)→ __AgCl(s)+ __O₂(g)

A)0.560 L
B)0.747 L
C)1.12 L
D)1.68 L
E)3.36 L