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ScienceAges 16-18

Moles & molar mass

Calculate the amount of substance in moles by dividing sample mass by molar mass (n = m ÷ M). Review suitability for your learners before teaching.

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Worksheet StudioPractice pack · Ages 16-18

Moles & molar mass

Take your time. Show your thinking.

  1. 1. Calculate the number of moles in 616 g of CO₂ (molar mass M = 44 g/mol).

    616 g CO₂ · M = 44 g/mol

  2. 2. Calculate the number of moles in 1300 g of CaCO₃ (molar mass M = 100 g/mol).

    1300 g CaCO₃ · M = 100 g/mol

  3. 3. Calculate the number of moles in 176 g of CO₂ (molar mass M = 44 g/mol).

    176 g CO₂ · M = 44 g/mol

  4. 4. Calculate the number of moles in 255 g of NH₃ (molar mass M = 17 g/mol).

    255 g NH₃ · M = 17 g/mol

  5. 5. Calculate the number of moles in 700 g of CaCO₃ (molar mass M = 100 g/mol).

    700 g CaCO₃ · M = 100 g/mol

  6. 6. Calculate the number of moles in 136 g of NH₃ (molar mass M = 17 g/mol).

    136 g NH₃ · M = 17 g/mol

  7. 7. Calculate the number of moles in 448 g of O₂ (molar mass M = 32 g/mol).

    448 g O₂ · M = 32 g/mol

  8. 8. Calculate the number of moles in 400 g of CaCO₃ (molar mass M = 100 g/mol).

    400 g CaCO₃ · M = 100 g/mol

  9. 9. Calculate the number of moles in 280 g of NaOH (molar mass M = 40 g/mol).

    280 g NaOH · M = 40 g/mol

  10. 10. Calculate the number of moles in 480 g of NaOH (molar mass M = 40 g/mol).

    480 g NaOH · M = 40 g/mol

  11. 11. Calculate the number of moles in 528 g of CO₂ (molar mass M = 44 g/mol).

    528 g CO₂ · M = 44 g/mol

  12. 12. Calculate the number of moles in 440 g of NaOH (molar mass M = 40 g/mol).

    440 g NaOH · M = 40 g/mol
12 questions · Seed 42 · Age guidance, not curriculum certification
View the answer key
Worksheet StudioAnswer key · Ages 16-18

Moles & molar mass

Answers and reasoning. Review before teaching.

  1. 1. Calculate the number of moles in 616 g of CO₂ (molar mass M = 44 g/mol).

    14 mol

    Amount in moles n = mass ÷ molar mass = 616 ÷ 44 = 14 mol.

  2. 2. Calculate the number of moles in 1300 g of CaCO₃ (molar mass M = 100 g/mol).

    13 mol

    Amount in moles n = mass ÷ molar mass = 1300 ÷ 100 = 13 mol.

  3. 3. Calculate the number of moles in 176 g of CO₂ (molar mass M = 44 g/mol).

    4 mol

    Amount in moles n = mass ÷ molar mass = 176 ÷ 44 = 4 mol.

  4. 4. Calculate the number of moles in 255 g of NH₃ (molar mass M = 17 g/mol).

    15 mol

    Amount in moles n = mass ÷ molar mass = 255 ÷ 17 = 15 mol.

  5. 5. Calculate the number of moles in 700 g of CaCO₃ (molar mass M = 100 g/mol).

    7 mol

    Amount in moles n = mass ÷ molar mass = 700 ÷ 100 = 7 mol.

  6. 6. Calculate the number of moles in 136 g of NH₃ (molar mass M = 17 g/mol).

    8 mol

    Amount in moles n = mass ÷ molar mass = 136 ÷ 17 = 8 mol.

  7. 7. Calculate the number of moles in 448 g of O₂ (molar mass M = 32 g/mol).

    14 mol

    Amount in moles n = mass ÷ molar mass = 448 ÷ 32 = 14 mol.

  8. 8. Calculate the number of moles in 400 g of CaCO₃ (molar mass M = 100 g/mol).

    4 mol

    Amount in moles n = mass ÷ molar mass = 400 ÷ 100 = 4 mol.

  9. 9. Calculate the number of moles in 280 g of NaOH (molar mass M = 40 g/mol).

    7 mol

    Amount in moles n = mass ÷ molar mass = 280 ÷ 40 = 7 mol.

  10. 10. Calculate the number of moles in 480 g of NaOH (molar mass M = 40 g/mol).

    12 mol

    Amount in moles n = mass ÷ molar mass = 480 ÷ 40 = 12 mol.

  11. 11. Calculate the number of moles in 528 g of CO₂ (molar mass M = 44 g/mol).

    12 mol

    Amount in moles n = mass ÷ molar mass = 528 ÷ 44 = 12 mol.

  12. 12. Calculate the number of moles in 440 g of NaOH (molar mass M = 40 g/mol).

    11 mol

    Amount in moles n = mass ÷ molar mass = 440 ÷ 40 = 11 mol.

12 questions · Seed 42 · Age guidance, not curriculum certification
Worksheet StudioPractice pack · Ages 16-18

Moles & molar mass

Take your time. Show your thinking.

  1. 1. Calculate the number of moles in 616 g of CO₂ (molar mass M = 44 g/mol).

    616 g CO₂ · M = 44 g/mol

  2. 2. Calculate the number of moles in 1300 g of CaCO₃ (molar mass M = 100 g/mol).

    1300 g CaCO₃ · M = 100 g/mol

  3. 3. Calculate the number of moles in 176 g of CO₂ (molar mass M = 44 g/mol).

    176 g CO₂ · M = 44 g/mol

  4. 4. Calculate the number of moles in 255 g of NH₃ (molar mass M = 17 g/mol).

    255 g NH₃ · M = 17 g/mol

  5. 5. Calculate the number of moles in 700 g of CaCO₃ (molar mass M = 100 g/mol).

    700 g CaCO₃ · M = 100 g/mol

  6. 6. Calculate the number of moles in 136 g of NH₃ (molar mass M = 17 g/mol).

    136 g NH₃ · M = 17 g/mol

  7. 7. Calculate the number of moles in 448 g of O₂ (molar mass M = 32 g/mol).

    448 g O₂ · M = 32 g/mol

  8. 8. Calculate the number of moles in 400 g of CaCO₃ (molar mass M = 100 g/mol).

    400 g CaCO₃ · M = 100 g/mol

  9. 9. Calculate the number of moles in 280 g of NaOH (molar mass M = 40 g/mol).

    280 g NaOH · M = 40 g/mol

  10. 10. Calculate the number of moles in 480 g of NaOH (molar mass M = 40 g/mol).

    480 g NaOH · M = 40 g/mol

  11. 11. Calculate the number of moles in 528 g of CO₂ (molar mass M = 44 g/mol).

    528 g CO₂ · M = 44 g/mol

  12. 12. Calculate the number of moles in 440 g of NaOH (molar mass M = 40 g/mol).

    440 g NaOH · M = 40 g/mol
12 questions · Seed 42 · Age guidance, not curriculum certification
Worksheet StudioAnswer key · Ages 16-18

Moles & molar mass

Answers and reasoning. Review before teaching.

  1. 1. Calculate the number of moles in 616 g of CO₂ (molar mass M = 44 g/mol).

    14 mol

    Amount in moles n = mass ÷ molar mass = 616 ÷ 44 = 14 mol.

  2. 2. Calculate the number of moles in 1300 g of CaCO₃ (molar mass M = 100 g/mol).

    13 mol

    Amount in moles n = mass ÷ molar mass = 1300 ÷ 100 = 13 mol.

  3. 3. Calculate the number of moles in 176 g of CO₂ (molar mass M = 44 g/mol).

    4 mol

    Amount in moles n = mass ÷ molar mass = 176 ÷ 44 = 4 mol.

  4. 4. Calculate the number of moles in 255 g of NH₃ (molar mass M = 17 g/mol).

    15 mol

    Amount in moles n = mass ÷ molar mass = 255 ÷ 17 = 15 mol.

  5. 5. Calculate the number of moles in 700 g of CaCO₃ (molar mass M = 100 g/mol).

    7 mol

    Amount in moles n = mass ÷ molar mass = 700 ÷ 100 = 7 mol.

  6. 6. Calculate the number of moles in 136 g of NH₃ (molar mass M = 17 g/mol).

    8 mol

    Amount in moles n = mass ÷ molar mass = 136 ÷ 17 = 8 mol.

  7. 7. Calculate the number of moles in 448 g of O₂ (molar mass M = 32 g/mol).

    14 mol

    Amount in moles n = mass ÷ molar mass = 448 ÷ 32 = 14 mol.

  8. 8. Calculate the number of moles in 400 g of CaCO₃ (molar mass M = 100 g/mol).

    4 mol

    Amount in moles n = mass ÷ molar mass = 400 ÷ 100 = 4 mol.

  9. 9. Calculate the number of moles in 280 g of NaOH (molar mass M = 40 g/mol).

    7 mol

    Amount in moles n = mass ÷ molar mass = 280 ÷ 40 = 7 mol.

  10. 10. Calculate the number of moles in 480 g of NaOH (molar mass M = 40 g/mol).

    12 mol

    Amount in moles n = mass ÷ molar mass = 480 ÷ 40 = 12 mol.

  11. 11. Calculate the number of moles in 528 g of CO₂ (molar mass M = 44 g/mol).

    12 mol

    Amount in moles n = mass ÷ molar mass = 528 ÷ 44 = 12 mol.

  12. 12. Calculate the number of moles in 440 g of NaOH (molar mass M = 40 g/mol).

    11 mol

    Amount in moles n = mass ÷ molar mass = 440 ÷ 40 = 11 mol.

12 questions · Seed 42 · Age guidance, not curriculum certification