How many moles of Na will react with water to produce 4.0 mol of NaOH? 2Na + 2H2O --> 2NaOH + H2

2. What mass of oxygen will be needed to produce 3.25 mol of P4O10?

4P + 5O2 --> P4O10

3. How many moles of Na2CO3 are required to produce 100.0 g of NaNO3?

Na2CO3 + 2HNO3 --> 2NaNO3 + CO2 + H2O

4. What mass of oxygen is produced when 1.840 mol of H2O2 decomposes?

2H2O2 --> 2H2O + O2

5. How many moles of lithium chloride will be formed by the reaction of chlorine with 0.046 mol of lithium bromide?

2LiBr + Cl2 --> 2LiCl + Br2

6. If 625 g of Fe3O4 is produced in the reaction, how many moles of iron were used?

3Fe + 4H2O --> 4H2 + Fe3O4

7. Calculate the number of grams of Al2O3 that are needed to produce 0.236 mol of Al.

2Al2O3 --> 4Al + 3O2

8. How many grams of Fe3O4 are produced from 4.66 mols of Fe?

3Fe + 4H2O --> 4H2 + Fe3O4

9. How many grams of NaCN are needed to react with 2.88 mols of (NH4)2CO3?

(NH4)2CO3 + 2NaCN --> 2NH4CN + Na2CO3

10. How many moles of O2 are produced from 1.82 mols of Br2?

2 Mn2O3 + 6Br2 --> 4MnBr3 + 3O2