Coefficients in a Chemical equation

Chemistry
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What is the SUM of coefficients for the balanced equation that represents the complete combustion of methylbenzene?

Apr 8th, 2015

C6H5CH3 + O2 → CO2 + H2O                        balance for H atoms

C6H5CH3 + O2 → CO2 + 4H2O                      balance for C atoms

C6H5CH3 + O2 → 7CO2 + 4H2O                    balance for O atoms

C6H5CH3 + 9O2 → 7CO2 + 4H2O

In the balanced equation the sum of all coefficients is 1 + 9 + 7 + 4 = 21.


Apr 8th, 2015

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