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Grade 10 Moles & Molar Mass Worksheet with Answers
Grade 10 (US) · Year 11 (UK) · Class 10 (India) · Chemistry
Unit 3: Chemical ReactionsThe MoleNGSS HS-PS1-7
Calculating molar mass and converting between grams and moles. This free high school worksheet has 12 questions and a full answer key. Print it or save it as a PDF — every answer is checked by code, not guessed.
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Practice Sheetaethelsystems.comMoles & Molar Mass
Grade 10 · Chemistry
Name
Class
Date
Learning goal: The Mole · NGSS HS-PS1-7
Directions: Read each question carefully and write your answer on the line. Use the diagram to help you.
What is the molar mass of O₂ (oxygen gas)? (O = 16)
Answer: 32 g/mol
RememberChemistry tool kit
- 1
What is the mass of 3 mol of HCl? (H = 1, Cl = 35.5)
- 2
How many moles are in 200 g of MgO? (Mg = 24, O = 16)
- 3
How many moles are in 51 g of Al₂O₃? (Al = 27, O = 16)
- 4
How many moles are in 25 g of CaCO₃? (Ca = 40, C = 12, O = 16)
- 5
What is the mass of 2 mol of CaCO₃? (Ca = 40, C = 12, O = 16)
- 6
How many moles are in 88 g of CO₂? (C = 12, O = 16)
- 7
What is the mass of 0.5 mol of Al₂O₃? (Al = 27, O = 16)
- 8
What is the molar mass of Al₂O₃ (aluminum oxide)? (Al = 27, O = 16)
- 9
What is the molar mass of CaCO₃ (calcium carbonate)? (Ca = 40, C = 12, O = 16)
- 10
What is the mass of 0.5 mol of C₆H₁₂O₆? (C = 12, H = 1, O = 16)
- 11
What is the mass of 2 mol of MgO? (Mg = 24, O = 16)
- 12
How many moles are in 22 g of CO₂? (C = 12, O = 16)
★ Challenge corner for fast finishers
If you could fold a sheet of paper 42 times, roughly how thick would it be?
How did I do?
Teacher's comments
Free printable worksheets with answer keys · aethelsystems.com/worksheets/chemistry/10/molar_mass
Answer key — Moles & Molar Mass (Grade 10)
- 1.109.5 g
- 2.5 mol
- 3.0.5 mol
- 4.0.25 mol
- 5.200 g
- 6.2 mol
- 7.51 g
- 8.102 g/mol
- 9.100 g/mol
- 10.90 g
- 11.80 g
- 12.0.5 mol
- ★far enough to reach the Moon (about 440,000 km)
Answer key (click to show)
- 1.109.5 g
- 2.5 mol
- 3.0.5 mol
- 4.0.25 mol
- 5.200 g
- 6.2 mol
- 7.51 g
- 8.102 g/mol
- 9.100 g/mol
- 10.90 g
- 11.80 g
- 12.0.5 mol
- ★far enough to reach the Moon (about 440,000 km) (challenge corner)
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