Free Printable Test #6- Stoichiometry Review

Worksheets

Test #6- Stoichiometry Review

Total questions: 20

Worksheet time: 3600secs

Name

Class

Date

Given the balanced equation representing a reaction:

CaO(s) + CO₂(g) --> CaCO₃(s) + heat

What is the total mass of CaO(s) that reacts completely with 88 grams of CO₂(g) to produce 200 grams of CaCO₃(s)?

56 g

88 g

112 g

288 g

The mass of a mole of a substance is equal to

the atomic number in grams

the mass of the most common isotope in grams

the gram-formula mass

the mass of 22.4 L of any substance

Which equation is correctly balanced?

H₂ + O₂ --> H₂O

N₂ + H₂ --> NH₃

2NaCl --> Na + Cl₂

2KCl --> 2K + Cl₂

What is the empirical formula for the compound C₆H₁₂O₆?

CH₂O

C₂H₄O₂

C₃H₆O₃

C₆H₁₂O₆

What is the total number of moles in an 80-gram sample of C₂H₅Cl (gram-formula mass = 64 g/mol) ?

0.806 mol

1.24 mol

2.48 mol

5.16 mol

Consider the following unbalanced equation:

_Fe + _O₂ --> _Fe₂O₃

When the equation is completely balanced using smallest whole numbers, the coefficient of Fe is

When the equation

_C₂H₄ + _O₂ --> _CO₂ + _H₂O

is balanced using the smallest whole numbers, what is the coefficient of the O₂?

What is the gram-formula mass of Al₂(SO₄)₃?

123 g/mol

150 g/mol

214 g/mol

342 g/mol

What is the percent composition by mass of nitrogen in (NH₄)₂CO₃ (gram-formula mass = 96 g/mol) ?

14.6%

29.2%

58.4%

87.5%

10.

What is the mass of 4.5 moles of KOH (gram-formula mass = 56 g/mol) ?

0.080 g

56 g

36 g

252 g

11.

Given the balanced reaction:

2 C₄H₁₀ + 13 O₂ --> 8 CO₂ + 10 H₂O + energy

How many moles of CO₂ are produced when 5.0 moles of C₄H₁₀ reacts completely?

5.0 mol

10 mol

20 mol

40 mol

12.

Consider the following balanced equation:

C₃H₈ + 5O₂ --> 3CO₂ + 4H₂O

What is the total number of moles of O₂ required to produce 1.5 moles of CO₂?

1.5 mole

2.5 mole

3.0 mole

5.0 mole

13.

What is the gram-formula mass of MgCO₃ $\cdot$ 5H₂O?

84 g/mol

102 g/mol

110 g/mol

174 g/mol

14.

Given the balanced equation:

2KClO₃ → 2KCl + 3O₂

Which type of reaction is represented by this equation?

single replacement

double replacement

synthesis

decomposition

15.

Given the balanced reaction:

Zn(s) + H₂SO₄(aq) --> ZnSO₄(aq) + H₂(g)

Which type of reaction is represented by this equation?

synthesis

decomposition

single replacement

double replacement

16.

Given the balanced reaction:

N₂(g) + 3H₂(g) → 2NH₃(g)

What is the mole ratio of N₂(g) to H₂(g)?

1:2

1:3

2:2

2:3

17.

Which formula is both molecular and empirical?

$C_6H_{12}O_6$

$C_4H_8$

$C_3H_8O$

$C_2H_4O_2$

18.

What is the molecular formula of a compound that has a molecular mass of 42 and an empirical formula of CH₂ ?

CH₂

C₂H₄

C₃H₆

C₄H₁₂

19.

Given the balanced equation representing a reaction:

K₂CO₃ (aq) + BaCl₂ (aq) --> 2KCl (aq) + BaCO₃ (s)

Which type of reaction is represented by this equation?

synthesis

decomposition

single replacement

double replacement

20.

Given the balanced reaction:

2SO₂(g) + O₂(g) --> 2SO₃(g)

Which type of reaction is represented by this equation?

synthesis

decomposition

single replacement

double replacement

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Test #6- Stoichiometry Review

Total questions: 20

Worksheet time: 3600secs

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