A gaseous fuel mixture stored at 748 mmhg and 298 k, Ask an Expert

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A gaseous fuel mixture stored at 748 mmHg and 298 K contains only methane CH4 and propane C3 H8. When 11.2 L of this fuel mixture is burned, it produces 769 kJ of heat. What is the mole fraction of methane in the mixture? (Assume that the water produced by the combustion is in the gaseous state.)

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