Question Detail
Question
How much heat is released when 4.50 g of methane gas (CH4) undergoes complete combustion? CH4(g) + 2O2(g) -> CO2(g) + 2H2O(l), ΔH = -890 kJ/mol.
Correct Answer
Option C is the correct answer.
Detailed Explanation
Molar mass of CH4 = 16.0 g/mol; n = 4.50 / 16.0 = 0.281 mol. Heat released = 0.281 mol * (-890 kJ/mol) = -250 kJ.
Hint
No hint available