â¼ Part A A gaseous fuel mixture contains 25.3% methane (CH4), 38.2% ethane (C2H6). and the rest propane (CsHs) by volume. When the fuel mixture contained in a 1.49 L tank, stored at 779 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.) Express your answer with the appropriate units Valuekj