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how many carbon dioxide molecules are produced for every gram of ethanol combusted?

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Chemistry

how many carbon dioxide molecules are produced for every gram ofethanol combusted?

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4.0 Ratings (520 Votes)

C2H5OH +   3O2 -----------------------> 2 CO2 + 3 H2O

46 g                                                      2 mol

46 g ethanol ------------------------> 2 mol of CO2

1 g ethanol -------------------------> 2/46 mol of CO2

                     -------------------------> 0.0435 of CO2

for every gram of ethanol    0.0435 mol of CO2 produced

1 mol ------------------------> 6.023 x 10^23 molecules

0.0435 mol CO2 --------------> 0.0435 x 6.023 x 10^23 molecules

                         ----------------> 2.62 x 10^22 molecules

CO2 molecules = 2.62 x 10^22 molecules
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