Mathematics · Thermodynamics and Gas Laws
A natural gas mixture is assumed to contain only methane (CH4) and ethane (C2H6). On complete combustion of 10 litres of this gas mixture at STP, the heat evolved is 474.6 kJ. Given that ΔHcomb(CH4) = -894 kJ mol-1 and ΔHcomb(C2H6) = -1500 kJ mol-1, what is the percentage composition of methane by volume in the mixture?
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