Chemistry Mole Calculation Test Questions

Ten practice questions for learning how to calculate with moles

Mole coming out of molehill
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By
Todd Helmenstine
Todd Helmenstine
Todd Helmenstine is a science writer and illustrator who has taught physics and math at the college level. He holds bachelor's degrees in both physics and mathematics.
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Updated on June 26, 2019

The mole is a standard SI unit used primarily in chemistry. This is a collection of ten chemistry test questions dealing with the mole. A periodic table will be useful to complete these questions. Answers appear after the final question.

01
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Question 1

How many moles of copper are in 6,000,000 atoms of copper?

02
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Question 2

How many atoms are in 5 moles of silver?

03
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Question 3

How many atoms of gold are in 1 gram of gold?

04
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Question 4

How many moles of sulfur are in 53.7 grams of sulfur?

05
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Question 5

How many grams are in a sample containing 2.71 x 1024 atoms of iron?

06
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Question 6

How many moles of lithium (Li) are in 1 mole of lithium hydride (LiH)?

07
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Question 7

How many moles of oxygen (O) are in 1 mole of calcium carbonate (CaCO3)?

08
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Question 8

How many atoms of hydrogen are in 1 mole of water (H20)?

09
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Question 9

How many atoms of oxygen are in 2 moles of O2?

10
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Question 10

How many moles of oxygen are in 2.71 x 1025 molecules of carbon dioxide (CO2)?

11
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Answers

1. 9.96 x 10-19 moles of copper
2. 3.01 x 1024 atoms of silver
3. 3.06 x 1021 atoms of gold
4. 1.67 moles of sulfur
5. 251.33 grams of iron.
6. 1 mole of lithium
7. 3 moles of oxygen
8. 1.20 x 1024 atoms of hydrogen
9. 2.41 x 1024 atoms of oxygen
10. 90 moles

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Helmenstine, Todd. "Chemistry Mole Calculation Test Questions." ThoughtCo, Aug. 29, 2020, thoughtco.com/chemistry-mole-test-questions-604124. Helmenstine, Todd. (2020, August 29). Chemistry Mole Calculation Test Questions. Retrieved from https://www.thoughtco.com/chemistry-mole-test-questions-604124 Helmenstine, Todd. "Chemistry Mole Calculation Test Questions." ThoughtCo. https://www.thoughtco.com/chemistry-mole-test-questions-604124 (accessed June 6, 2023).