Answer:
For 0.5 moles of oxygen consumed, there will be 1.0 moles of H2O produced.
Explanation:
Step 1: Data given
Number of moles of oxygen (O2) = 0.5 moles
Suppose H2 is in excess
Step 2: The balanced equation
O2 + 2H2 → 2H2O
Step 3: Calculate moles of H2O
For 1 mol of O2 we need 2 moles of H2 to produce 2 moles of H2O
For 0.5 moles of O2 we'll have 2*0.5 moles = 1.0 moles of H2O
For 0.5 moles of oxygen consumed, there will be 1.0 moles of H2O produced.
