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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asked Jul 18, 2019 64.1k views

1 Answer

Asherber · Answer 1 · 2019-07-22T03:09:26+0000

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.