Free Printable Stoichiometry Practice Quiz

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Stoichiometry Practice Quiz

Total questions: 16

Worksheet time: 4hrs 0mins

Name

Class

Date

N₂ + 3H₂ → 2NH₃
How many moles of hydrogen are needed to react with 2 moles of nitrogen?

2H₂ + O₂ → 2H₂O
How many moles of water can be produced if 8 moles H₂ are used?

4 moles

8 moles

16 moles

2 moles

For the Balanced Reaction: 3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe?

3mol Mg / 2 mol Fe

2 mol Mg/ 3 mol Fe

1 mol Fe/ 2 mol Fe

3 mol MgO / 2 mol Fe

Cl₂ + 2KBr → Br₂ + 2KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?

749 g

223 g

479 g

814 g

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

125.2 g O₂

What is the first thing you must do to solve a stoichiometry problem?

Write a Balanced Equation

Panic

Write an Unbalanced Equation

Ask for help

What is the molar mass of C₆H₁₂O₆?

180.18

180.12

180.24

180.06

Balance the following reaction:
Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)

1,2,1,2

2,1,1,2

1,2,1,1

1,2,2,2

In a Chemical Reaction, the Law of Conservation of Mass states?

Matter is present.

Matter is NOT created or destroyed.

Matter is created and destroyed.

10.

Given the combustion reaction C₃H₈ + 5O₂ → 3CO₂ + 4H₂O, how many liters of carbon dioxide can be produced from 1.00 liter of O₂ at standard temperature and pressure?

0.600 L

0.825 L

1.21 L

1.67 L

11.

Ammonia is produced from the reaction of nitrogen and hydrogen gases. What volume of hydrogen at STP is required to produce 25 g of ammonia?

N₂(g) + 3H₂(g) → 2NH₃(g)

33 L

1.1 L

49 L

25 L

12.

These are normally located on the right side of a chemical equation.

compounds

elements

products

reactants

13.

The following is a chemical reaction except

burning of paper

ripening of banana

rusting of nails

shredding of paper

14.

KNO₃ --> KNO₂ + O₂
What coefficients are needed to balance the reaction?

2, 2, 1

2, 3, 2

1, 2, 2

1, 3, 1

15.

2Al + 3H₂SO₄ → Al₂(SO₄)₃ + 3H₂

How many grams of aluminum sulfate would be formed if 250g H₂SO₄ completely reacted with aluminum?

0.85 g

290 g

450 g

870 g

16.

2AlCl₃ →2Al + 3Cl₂

lf 25.0 g of aluminum chloride are decomposed, how many molecules of Cl₂ are produced?

0.281 molecules Cl₂

19.7 molecules Cl₂

1.69 x 10²¹ molecules Cl₂

1.69 x 10²³ molecules Cl₂

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Stoichiometry Practice Quiz

Total questions: 16

Worksheet time: 4hrs 0mins

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