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A mixture of methane (CH4) and ethane (C2H6) of mass 31.16 g is completely burned in...

A mixture of methane (CH4) and ethane (C2H6) of mass 31.16 g is completely burned in oxygen. If the total mass of CO2 and H2O produced is 150.19 g, calculate the mass fraction of CH4 in the mixture.

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