Question Detail
Question
How much heat is released when 4.50 g of methane gas (CH₄) is burned? (ΔH = -890 kJ/mol, molar mass CH₄ = 16 g/mol)
Correct Answer
Option B is the correct answer.
Detailed Explanation
Moles of CH₄ = 4.50/16 = 0.281 mol. Heat released = 0.281 mol × (-890 kJ/mol) = -250 kJ.
Hint
The notes provide this exact calculation.