A gaseous fuel mixture contains 22.2% methane (CH4), 39.8% ethane (C2H6) and the rest propane (C3H8) by volume. When the fuel mixture contained in a 1.51 L tank, stored at 746 mmHg and 298 K, undergoes complete combustion, how much heat is emitted? (Assume that the water produced by the combustion is in the gaseous state.)

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A gaseous fuel mixture stored at 745 mmHg and 298 K contains only methane(CH4) and propane (C3H8). When 12.8 L of this fuel mixture burns, it produces 775 kJ of heat. The enthalpy of combustion for CH4(g) is â802.5kJ. The enthalpy of combustion for C3H8(g) is â2043.9kJâ

What is the mole fraction of methane in the mixture? (Assume that the water produced by the combustion is in the gaseous state.)â

1. A gaseous fuel mixture stored at 748 mmHg and 298 K containsonly methane (CH4) and propane (C3H8). When 12.4 L of this fuelmixture is burned, it produces 768 kJ of heat. What is the molefraction of methane in the mixture? (Assume that the water producedby the combustion is in the gaseous state).

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