Worksheet

Gas volume and moles at standard conditions

Grade 10 Science Worksheet - Challenge Me

NameDate

Circle the best answer, or write your answer on the line.

  1. A balloon holds 22.01 g of CO₂ (44.01 g/mol) at STP (0 °C, 1 atm, 22.4 L/mol). What volume is that, to 0.01 L, Esme?

  2. A box holds 132.03 g of CO₂ (44.01 g/mol) at STP (0 °C, 1 atm, 22.4 L/mol). What volume is that, to 0.01 L, Kira?

  3. One sheet uses 100 kPa and gives 22.7 L for 1 mol of gas; another uses 1 atm and gives 22.4 L. Which is true, Luz?

    • Just one can be right: a mole fills one volume
    • Both are right for their own pressure
    • The 22.7 L sheet made an error

  4. Ren uses 22.4 L/mol for a balloon of gas at 30 °C. Which reply fits, Noah?

    • Agree, if the gas is carbon dioxide
    • Agree: 22.4 L/mol works at any temperature
    • Disagree: warm gas fills more than 22.4 L per mole

  5. Baking soda (84.01 g/mol) and vinegar react: NaHCO₃ + CH₃COOH → CH₃COONa + H₂O + CO₂. How much CO₂ at STP does 8.401 g of baking soda give, Pia?

    • 188.18 L, from 8.401 × 22.4
    • 2.24 L
    • 8.401 L, one liter per gram

  6. In respiration, C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O. How much CO₂ at STP comes from 0.25 mol of glucose, Ren?

    • 0.07 L, from 1.5 ÷ 22.4
    • 5.6 L, from 0.25 mol of CO₂
    • 33.6 L, from 1.5 mol of CO₂

  7. Water forms by 2H₂ + O₂ → 2H₂O, shown as an equation only. How much O₂ at STP reacts with 4 mol of H₂, Tala?

    • 0.09 L, from 2 ÷ 22.4
    • 89.6 L, from 4 mol of O₂
    • 44.8 L, from 2 mol of O₂

  8. Which fills more space at STP: 64.00 g of O₂ (32.00 g/mol) or 44.01 g of CO₂ (44.01 g/mol), Zee?

    • They match, since both are gases
    • The CO₂, since its molecules are bigger
    • The O₂: 2 mol, or 44.8 L

  9. A 22.4 L balloon of O₂ and a 22.4 L balloon of CO₂ at STP: which holds more molecules, Ari?

    • The O₂, since its molecules are smaller
    • The CO₂, since its molecules are heavier
    • Neither: each holds 6.022 × 10²³

  10. Esme says a mole of CO₂ fills more space at STP than a mole of O₂ because CO₂ is heavier. Which reply fits, Bo?

    • Disagree: a mole of any gas fills 22.4 L at STP
    • Agree: heavier gas molecules take up more room
    • Agree: CO₂ fills 44.01 L, its molar mass in liters
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Gas volume and moles at standard conditions

Answer Key - Grade 10 Science Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.

  1. A balloon holds 22.01 g of CO₂ (44.01 g/mol) at STP (0 °C, 1 atm, 22.4 L/mol). What volume is that, to 0.01 L, Esme?

    11.2 L

  2. A box holds 132.03 g of CO₂ (44.01 g/mol) at STP (0 °C, 1 atm, 22.4 L/mol). What volume is that, to 0.01 L, Kira?

    67.2 L

  3. One sheet uses 100 kPa and gives 22.7 L for 1 mol of gas; another uses 1 atm and gives 22.4 L. Which is true, Luz?

    • Just one can be right: a mole fills one volume
    • Both are right for their own pressure
    • The 22.7 L sheet made an error

  4. Ren uses 22.4 L/mol for a balloon of gas at 30 °C. Which reply fits, Noah?

    • Agree, if the gas is carbon dioxide
    • Agree: 22.4 L/mol works at any temperature
    • Disagree: warm gas fills more than 22.4 L per mole

  5. Baking soda (84.01 g/mol) and vinegar react: NaHCO₃ + CH₃COOH → CH₃COONa + H₂O + CO₂. How much CO₂ at STP does 8.401 g of baking soda give, Pia?

    • 188.18 L, from 8.401 × 22.4
    • 2.24 L
    • 8.401 L, one liter per gram

  6. In respiration, C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O. How much CO₂ at STP comes from 0.25 mol of glucose, Ren?

    • 0.07 L, from 1.5 ÷ 22.4
    • 5.6 L, from 0.25 mol of CO₂
    • 33.6 L, from 1.5 mol of CO₂

  7. Water forms by 2H₂ + O₂ → 2H₂O, shown as an equation only. How much O₂ at STP reacts with 4 mol of H₂, Tala?

    • 0.09 L, from 2 ÷ 22.4
    • 89.6 L, from 4 mol of O₂
    • 44.8 L, from 2 mol of O₂

  8. Which fills more space at STP: 64.00 g of O₂ (32.00 g/mol) or 44.01 g of CO₂ (44.01 g/mol), Zee?

    • They match, since both are gases
    • The CO₂, since its molecules are bigger
    • The O₂: 2 mol, or 44.8 L

  9. A 22.4 L balloon of O₂ and a 22.4 L balloon of CO₂ at STP: which holds more molecules, Ari?

    • The O₂, since its molecules are smaller
    • The CO₂, since its molecules are heavier
    • Neither: each holds 6.022 × 10²³

  10. Esme says a mole of CO₂ fills more space at STP than a mole of O₂ because CO₂ is heavier. Which reply fits, Bo?

    • Disagree: a mole of any gas fills 22.4 L at STP
    • Agree: heavier gas molecules take up more room
    • Agree: CO₂ fills 44.01 L, its molar mass in liters