# Gas calculations including mass

## Stage 1

Find the mass of gas (at room temperature and pressure) for:

1. 9 dm3 of ammonia, NH3(g)?

2. 138 dm3 of oxygen, O2(g)?

3. 198 dm3 of nitrogen, N2(g)?

4. 159 dm3 of ethene, C2H4(g)?

5. 60 dm3 of helium, He(g)?

## Stage 2

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

6. 165 g of neon, Ne(g)?

7. 58 g of butane, C4H10(g)?

8. 292.5 g of ethane, C2H6(g)?

9. 161 g of carbon monoxide, CO(g)?

10. 164 g of oxygen, O2(g)?

## Stage 3

11. What volume of gas in cm3 (at room temperature and pressure) would be occupied by 205 g of argon, Ar(g)?

12. What volume of gas in cm3 (at room temperature and pressure) would be occupied by 17.5 g of ethene, C2H4(g)?

13. What volume of gas in dm3 (at room temperature and pressure) would be occupied by 144.5 g of ammonia, NH3(g)?

14. Find the mass of gas (at room temperature and pressure) of 120000 cm3 of nitrogen, N2(g)?

15. Find the mass of gas (at room temperature and pressure) of 207 dm3 of chlorine, Cl2(g)?

1. 6.375 g

2. 184 g

3. 231 g

4. 185.5 g

5. 10 g

6. 198 dm3

7. 24 dm3

8. 234 dm3

9. 138 dm3

10. 123 dm3

11. 123000 cm3

12. 15000 cm3

13. 204 dm3

14. 140 g

15. 612.375 g