2. 2H 2 + O 2  2H 2 O a). How many moles of H 2 would be required to produce 5.0 moles of water?

3. 2H 2 + O 2  2H 2 O b). What mass of H 2 O is formed when H 2 reacts with 384 g of O 2 ?

4. H 2 SO 4 + NaOH  Na 2 SO 4 + H 2 O b). What mass of H 2 SO 4 would be required to react with 0.75 mol of NaOH?

5. H 2 SO 4 + NaOH  Na 2 SO 4 + H 2 O If 30.0 g of H 2 SO 4 reacts with sodium hydroxide, what mass of water is produced?

6. Sn + 2HF  SnF 2 + H 2 a). How many grams of SnF 2 are produced from the reaction of 30.0 g of HF? b) How many moles of HF will be needed to react with 48 grams of Tin, Sn?

7. In a spacecraft, the carbon dioxide exhaled by astronauts can be removed by its reaction with lithium hydroxide, LiOH, according to the following chemical equation. CO 2 (g) + 2LiOH(s)  Li 2 CO 3 (s) + H 2 O(l) If 20.0 moles of CO 2 is exhaled, the average amount exhaled by a person each day, how much (in grams) Li 2 CO 3 (s) is produced?

8. Na + H 2 O  NaOH + H 2 a). How many moles of sodium are required to produce 5.0 moles of NaOH, sodium hydroxide? b). How many moles of H 2 are produced in the reaction with 5.0 grams of water?