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Moles and molar mass

Year 10 maths · Fieldbook Learning

Name ______________________ Date __________

Moles = mass ÷ molar mass.

  1. How many moles are in 44 g of carbon dioxide (CO₂, 44 g/mol)?
  2. How many moles are in 27 g of water (H₂O, 18 g/mol)?
  3. How many moles are in 117 g of table salt (NaCl, 58.5 g/mol)?
  4. How many moles are in 48 g of oxygen gas (O₂, 32 g/mol)?
  5. How many moles are in 54 g of water (H₂O, 18 g/mol)?
  6. How many moles are in 175.5 g of table salt (NaCl, 58.5 g/mol)?
  7. How many moles are in 128 g of oxygen gas (O₂, 32 g/mol)?
  8. How many moles are in 96 g of oxygen gas (O₂, 32 g/mol)?
  9. How many moles are in 220 g of carbon dioxide (CO₂, 44 g/mol)?
  10. How many moles are in 72 g of water (H₂O, 18 g/mol)?
  11. How many moles are in 176 g of carbon dioxide (CO₂, 44 g/mol)?
  12. How many moles are in 66 g of carbon dioxide (CO₂, 44 g/mol)?
  13. How many moles are in 22 g of carbon dioxide (CO₂, 44 g/mol)?
  14. How many moles are in 45 g of water (H₂O, 18 g/mol)?
  15. How many moles are in 88 g of carbon dioxide (CO₂, 44 g/mol)?
  16. How many moles are in 29.25 g of table salt (NaCl, 58.5 g/mol)?
  17. How many moles are in 146.25 g of table salt (NaCl, 58.5 g/mol)?
  18. How many moles are in 292.5 g of table salt (NaCl, 58.5 g/mol)?
  19. How many moles are in 16 g of oxygen gas (O₂, 32 g/mol)?
  20. How many moles are in 32 g of oxygen gas (O₂, 32 g/mol)?
More free practice: fieldbooklearning.com/au/practice/year-10/moles-and-molar-mass/

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Answer key: Moles and molar mass

  1. 1 mol
  2. 1.5 mol
  3. 2 mol
  4. 1.5 mol
  5. 3 mol
  6. 3 mol
  7. 4 mol
  8. 3 mol
  9. 5 mol
  10. 4 mol
  11. 4 mol
  12. 1.5 mol
  13. 0.5 mol
  14. 2.5 mol
  15. 2 mol
  16. 0.5 mol
  17. 2.5 mol
  18. 5 mol
  19. 0.5 mol
  20. 1 mol