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Z's Stoich Quiz

Total questions: 10

Worksheet time: 42mins

Name
Class
Date
1.

How many moles of calcium nitrate would react with 4.55 moles of Chromium (III) sulfate to produce calcium sulfate and chromium(III) nitrate?

a)

1.37 moles of calcium nitrate

b)

13.65 moles of calcium nitrate

c)

13.7 moles of calcium nitrate

d)

13.70 moles of calcium nitrate

2.

What mass of Gallium chloride would react with excess fluorine to produce 78.9 g of chlorine? Gallium fluoride is the other product.

a)

261 g gallium chloride

b)

131 g gallium chloride

c)

294 g gallium chloride

d)

392 g gallium chloride

3.

What volume of nitrogen gas at STP would react with 37.25 g of magnesium to produce magnesium nitride?

a)

11.45 L N2

b)

22.89 L N2

c)

34.34 L N2

d)

17.21 L N2

4.

Determine the mass of calcium hydroxide produced when calcium carbide reacts with 0.64g of water according ot the following equation

CaC2 + 2H2O --> Ca(OH)2 + C2H2

a)

1.5 g Ca(OH)2

b)

1.2 g Ca(OH)2

c)

1.3 g Ca(OH)2

d)

1.4 g Ca(OH)2

5.

Determine the mass of lithium hydroxide produced when 0.38 g of lithium nitride reacts with water according to the following unbalanced equation.

____ Li3N + ____ H2O --> ____ NH3 + ____ LiOH

a)

0.79 g LiOH

b)

0.78 g LiOH

c)

0.77 g LiOH

d)

0.76 g LiOH

6.
What is the first thing you must do to solve a stoichiometry problem?
a)
Write a Balanced Equation
b)
Panic
c)
Write an Unbalanced Equation
d)
Avogadro's Number
7.

____NaClO3 (s) → ____NaCl (s) + ____O2 (g)

12.0 moles of NaClO3 will produce how many grams of O2 in the unbalanced equation above?

a)

256 g of O2

b)

576 g of O2

c)

288 g O2

8.

What is the limiting reactant?

a)

CH4

b)

H2O

c)

CO

d)

H2

9.

Consider the reaction between NO(g) and O2(g)

represented below. What is the balanced equation for this reaction?

a)

2NO + 2O2 → 2NO2 + 2O2

b)

2NO + 4O2 → 2NO2 + 2O2

c)

NO + O2 → NO2

d)

2NO + 2O2 → 2NO2 + O2

10.

Hydrogen and carbon monoxide react to form methanol, CH3OH. If 112 g CO(g) reacts with 80.0 g H2(g) to

form 120 g CH3OH, what is the percent yield?

a)

84%

b)

74%

c)

104%

d)

94%