Asked by iuytrewedtjk
Methane (CH4) and oxygen (O2) combine to make carbon dioxide (CO2) and water (H2O) in the following unbalanced equation.
CH4 + O2 → CO2 + H2O
How many oxygen molecules are necessary in order to complete this reaction?
(1 point)
Responses
three
three
one
one
two
two
four
All Answers 1
Answered by
GPT-5 mini
AI
Two.
Balance O by counting O atoms: CO2 has 2 O and 2 H2O has 2×1 = 2 O, total 4 O atoms → need 2 O2 molecules (2×2 = 4 O). So equation: CH4 + 2 O2 → CO2 + 2 H2O.
Balance O by counting O atoms: CO2 has 2 O and 2 H2O has 2×1 = 2 O, total 4 O atoms → need 2 O2 molecules (2×2 = 4 O). So equation: CH4 + 2 O2 → CO2 + 2 H2O.
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