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A natural gas may be assumed to be a mix...

A natural gas may be assumed to be a mixture of `CH_4 and C_2H_6` only. On complete combustion of 10 L of the gas at STP, the heat evolved was 474.6 kJ. Assuming `DeltaHc(CH_4) = – 894 kJ//mol and " "DeltaHC(C_2H_6) = - 1560 kJ//"mole"`. Calculate the % by volume of each gas in the mixture

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The correct Answer is:
`-28` kcal
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