Part 1: In the space below, use the periodic table and show how to calculate the molar mass of water (H_(2)O) and oxygen gas (O_(2)) Molar mass of H2O: H_(2)O:underline ( )g/mol Part 2: Balance and classify the reaction for the creation of oxygen gas (O_(2)) from water (H_(2)O) Fill in the blanks to balance the chemical reaction below: What type of reaction is this? (circle the correct answer) a. Single Replacement b. Double Replacement c. Combustion d. Decomposition underline ( )H_(2)O(l)arrow underline ( )H_(2)(g)+underline ( )O_(2)(g) Molar mass O_(2):underline ( )g/mol

1. Calculate molar mass of Atomic mass of H: 1.008 g/mol, O: 16.00 g/mol. **Molar mass formula:** g/mol. 2. Calculate molar mass of g/mol. 3. Balance the reaction Decomposition of water: Unbalanced: Balanced: ** ** 4. Classify reaction type Water breaking into simpler substances = Decomposition.