Question 444 of 513

Balance the equation: H2 + O2 → H2O

  • H2 + O2 → H2O
  • 2H2 + O2 → 2H2O
  • H2 + 2O2 → H2O2
  • 2H2 + 2O2 → 2H2O2

Correct Answer: B

Explanation
Hydrogen atoms are balanced, but oxygen is not. Place 2 in front of H2 and H2O: 2H2 + O2 → 2H2O.
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