10th grade Dalton's law of partial pressures worksheet

Dalton's law of partial pressures

Grade 10 Science Worksheet - Challenge Me

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

1. 1.

   A balloon holds 0.2 mol of O₂ and 0.8 mol of N₂ at 1.2 atm. What is the partial pressure of O₂, to 0.01 atm, Esme?
2. 2.

   A sealed syringe holds 0.03 mol of CO₂ and 0.07 mol of air at 2 atm. What is the partial pressure of the CO₂, to 0.01 atm, Jun?
3. 3.

   A tank holds 0.5 mol of O₂ and 1.5 mol of N₂ at 100 kPa. What is the partial pressure of O₂, to 0.01 kPa, Kira?
4. 4.

   Jun says air is mostly oxygen, since we breathe it. Which reply fits, Luz?

   • Agree: oxygen is about 78% of the air, and nitrogen about 21%
   • Disagree: dry air is about 78% nitrogen and 21% oxygen
   • Agree: air is about half oxygen
5. 5.

   Esme says the oxygen in air pushes with the full 101.325 kPa. Which reply fits, Milo?

   • Disagree: oxygen's partial pressure is about 21.2 kPa
   • Agree: oxygen is the main gas, so it pushes hardest
   • Agree: each gas in a mix pushes with the full total pressure
6. 6.

   Kira says the heavier gas in a mix has the higher partial pressure. Which reply fits, Noah?

   • Agree: heavier particles hit the walls harder, so they push more
   • Agree, if the mix is inside a tire
   • Disagree: partial pressure follows moles, not mass
7. 7.

   A balloon's gas totals 1.05 atm. N₂ is 0.82 atm and O₂ is 0.22 atm. What is the partial pressure of the other gases, Pia?

   • 1.04 atm
   • 0.01 atm
   • 2.09 atm, adding the total too
8. 8.

   A sealed syringe holds 0.3 mol of O₂ and 0.9 mol of N₂ at 1.20 atm. What is the partial pressure of N₂, Tala?

   • 0.4 atm, from 1.20 ÷ 3
   • 0.9 atm, from 0.75 × 1.20
   • 0.3 atm, the O₂ share
9. 9.

   Pumping more air into a sealed bike tire at the same temperature raises its O₂ partial pressure. Why, Ari?

   • The O₂ share of the air rises
   • More moles of O₂ are in the same volume
   • The O₂ particles grow bigger
10. 10.

    A tank holds equal moles of N₂, O₂ and CO₂ at 3.0 atm in total. What is each gas's partial pressure, Bo?

    • More for the CO₂, since it is heaviest
    • 1.0 atm each
    • 3.0 atm each