Free Printable Practice Test for Mol

Worksheets

Practice Test for Mol

Total questions: 14

Worksheet time: 53mins

Name

Class

Date

Stoichiometry is ____________ (choose all correct answers)

A way to convert quantities of reactants & products within a

chemical reaction.

The best way to determine amount of substances

involved in chemical reactions if at least 1 quantity

from the reaction is known.

The best way to determine the type of chemical reaction that has occurred.

A way for conversions from a reactant or product to

another reactant or product in the equation.

There are numerous units that can be used with stoichiometry conversions. Which units does this presentation cover (choose all correct units).

gallons

grams

joules

moles

If 2 mol of HCl react, how many moles of H₂are obtained?

(a) moles H₂

If 4 mol of HCl react, how many mol of hydrogen gas are produced?

(a) moles of H₂

2 NaClO₃ (s) --> 2NaCl (s) +3 O₂ (g)
12.00 moles of NaClO₃ will produce how many grams of O₂?

256 g of O₂

576 g of O₂

288 g O₂

B₂H₆ + 3O₂ -->2 HBO₂ + 2 H₂O
What mass of O₂ will be needed to burn 36.1 g of B₂H₆?

13.8 g O₂

3.86 mol of O₂

124 g O₂

In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 10.1 grams. What is his percent yield?

82%

0.82%

10.1 %

100%

4 Al + 3 O₂ –> 2 Al₂O₃ How much aluminum would be needed to completely react with 45 grams of O₂?

1.05 moles

3.75 moles

1.875 grams

1.875 moles

Actual yield must be determined by

experiments

calculations

theoretical yield

estimation

10.

What is the theoretical yield?

the maximum amount of product from a reaction

the amount of product recovered from a lab experiment

amount of product that causes the reaction to stop

the amount of product needed to reverse the reaction

11.

Mole ratios are obtained from the

balanced chemical equation

periodic table

molar mass

12.

Using the following equation:
Fe₂O₃(s) + 3H₂(g) --> 2Fe(s) + 3H₂O(l)
How many moles of iron can be made from 16.5 grams of Fe₂O₃?

0.21 moles Fe

0.66 moles Fe

2.44 moles Fe

0.72 moles Fe

13.

What is the mole ratio in the following reaction:
2CO + O₂→ 2CO₂

2:1:2

1:1:1

1:2:1

Have no clue what a mole ratios is!!

14.

Your percent yield is 80%. The actual amount of product produced was 29.1 grams. What is the theoretical yield?

25.2 grams

37.3 grams

37.1 grams

36.3 grams

100 %

Practice Test for Mol

Total questions: 14

Worksheet time: 53mins

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