What mass of carbon dioxide is produced from the complete combustion of 7.70 Tim

Question

What mass of carbon dioxide is produced from the complete combustion of 7.70 Times 10-3g of methane? Express your answer with the appropriate units. What mass of water is produced from the complete combustion of 7.70 Times 10-3g of methane? Express your answer with the appropriate units.

Explanation / Answer

a) CH4 + 2O2 ---> CO2 + 2H2O 7.7 x 10^-3 g CH4 /16.04 g/mol = 0.0004800 mol CH4 Since CH4 and CO2 exist in a 1:1 molar ratio, 0.0004800 mol CO2 are produced. 0.0004800 mol CO2 x 44.01 g/mol CO2 = 0.021 g CO2 b) From a, 2 mol H2O are produced for every 1 mol CH4 consumed. Therefore, 0.00096 mol H2O is produced. 0.00096 mol H2O x 18.02 g/mol H2O = 0.017 g H2O

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