Mixed gasoline weighing 1.5 kg and alcohol weighing 0.5 kg. What amount of heat will be released during the complete

| July 1, 2021 | education

Mixed gasoline weighing 1.5 kg and alcohol weighing 0.5 kg. What amount of heat will be released during the complete combustion of this fuel.? (Specific calorific value of gasoline 46 MJ Specific calorific value of alcohol 2.7 * 10 ^ 7.)

Data: m1 (mass of gasoline in the resulting mixture) = 1.5 kg; m2 (mass of alcohol) = 0.5 kg.

Constants: by condition q1 (specific heat of combustion of gasoline) = 46 MJ / kg (46 * 10 ^ 6 J / kg); q2 (specific heat of combustion of alcohol) = 2.7 * 10 ^ 7 J / kg.

The amount of heat that should be released during complete combustion of the mixture is determined by the formula: Q = q1 * m1 + q2 * m2.

Calculation: Q = 46 * 10 ^ 6 * 1.5 + 2.7 * 10 ^ 7 * 0.5 = 82.5 * 10 ^ 6 J (82.5 MJ).

Answer: With complete combustion of the resulting mixture, 82.5 MJ of heat will be released.



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