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Which chemical equation is balanced? A. CO2 + 4H2 -> CH4 + 2H2O B. 4CO2 + H2 -> CH4 + 2H2O C. CO2 + 4H2 -> 2CH4 + 2H2O D. 2CO2 + 2H2 -> 2CH4 + 2H2O
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4 votes
Which chemical equation is balanced?

A. CO2 + 4H2 -> CH4 + 2H2O
B. 4CO2 + H2 -> CH4 + 2H2O
C. CO2 + 4H2 -> 2CH4 + 2H2O
D. 2CO2 + 2H2 -> 2CH4 + 2H2O

User Chocolate Cake
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1 Answer

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A. CO2 + 4H2 -> CH4 + 2H2O

1 C , 2O, 4H -----> 1C, 2O, 8H

Number of atoms of all elements are the same before and after reaction.

User Asherber
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