Answer:
To find the number of moles of oxygen required to produce 5.0 moles of water, you need to balance the equation for the reaction between hydrogen and oxygen.
Step 1: Balance the equation:
2H2 + O2 --> 2H2O
Step 2: Determine the stoichiometric ratio of moles of oxygen required per mole of water:
From the balanced equation, 1 mole of oxygen is required for every 2 moles of water produced.
Step 3: Calculate the number of moles of oxygen required:
If you want to produce 5.0 moles of water, then the number of moles of oxygen required would be 1 * (5.0 moles of H2O / 2 moles of H2O) = 2.5 moles of oxygen.