Law of Conservation of Mass Worksheet

Name ____________________________________________________________________________    Section_____

Fill in the blank with the correct number:

1. 40 g of calcium reacts with 71 g of chlorine to produce _____ g of calcium chloride.

2. _____ g of potassium reacts with 16 g of oxygen to produce 94 g of potassium oxide.

3. 14 g of lithium reaction with _____ g sulfur to produce 46 g of lithium sulfide.

4. 24 g of magnesium reacts with 38 g of fluorine to produce _____ g magnesium fluoride.

5. 65.5 g copper reacts with _____ g oxygen to produce 81 g copper (I) oxide.

6. 88 g of strontium reacts with 160 g bromine to produce _____ g strontium bromide.

7. 46 g of sodium reacts with _____ g chlorine to produce 117 g sodium chloride.

8. ____ g iron reacts with 71 g chlorine to produce 129 g of iron (II) chloride.

9. 137 g of barium reacts with ______ g iodine to produce 391 g barium iodide.

10. _____ g  hydrogen reacts with 32 g of oxygen to produce 34 g of hydrogen peroxide.