Gas calculations

Stage 1

How many moles of gas (at room temperature and pressure) are present in:

1. 30 dm3 of propane, C3H8(g)?

2. 81 dm3 of nitrous oxide, N2O(g)?

3. 27 dm3 of methane, CH4(g)?

4. 219 dm3 of neon, Ne(g)?

5. 123 dm3 of nitrogen, N2(g)?

Stage 2

What volume of gas in dm3 (at room temperature and pressure) would be occupied by:

6. 9.25 moles of argon, Ar(g)?

7. 9.125 moles of helium, He(g)?

8. 0.375 moles of hydrogen, H2(g)?

9. 0.125 moles of propene, C3H6(g)?

10. 0.5 moles of propane, C3H8(g)?

Stage 3

11. How many moles of gas (at room temperature and pressure) are present in 147000 cm3 of propene, C3H6(g)?

12. How many moles of gas (at room temperature and pressure) are present in 198000 cm3 of ethane, C2H6(g)?

13. What volume of gas in dm3 (at room temperature and pressure) would be occupied by 1.125 moles of chlorine, Cl2(g)?

14. How many moles of gas (at room temperature and pressure) are present in 15 dm3 of argon, Ar(g)?

15. What volume of gas in dm3 (at room temperature and pressure) would be occupied by 2.875 moles of methane, CH4(g)?

Stage 1

1. 1.25 moles

2. 3.375 moles

3. 1.125 moles

4. 9.125 moles

5. 5.125 moles

Stage 2

6. 222 dm3

7. 219 dm3

8. 9 dm3

9. 3 dm3

10. 12 dm3

Stage 3

11. 6.125 moles

12. 8.25 moles

13. 27 dm3

14. 0.625 moles

15. 69 dm3