How much heat will be released during the complete combustion of a mixture of 2.5 kg of gasoline and 0.5 kg of alcohol?

Q (total amount of heat) = Q1 + Q2, where Q1 is the heat that will be released during the combustion of gasoline, and Q2 is the heat that will be released during the combustion of alcohol Q1 = q * m = 46 * 1,000,000 * 2.5 = 115,000,000 J = 115 MJ
Q2 = q * m = 27 * 1,000,000 * 0.5 = 13,500,000 = 13.5 MJ
Q = Q1 + Q2 = 115 + 13.5 = 128.5 MJ (or 128,500,000 J)
Answer: 128.5 MJ
P.S: q-specific heat of combustion, taken from the table