When gasoline is burned with a specific heat of combustion of 46 MJ / kg, 23 GJ of energy is released. What is the mass of gasoline burned?
To calculate the mass of burnt gasoline, we apply the formula: m = Q / qb.
Values of variables and constants: Q – released heat (Q = 23 GJ = 23 * 10 ^ 9 J); qb – specific heat of combustion of gasoline (qb = 46 MJ / kg = 46 * 10 ^ 6 J / kg).
Let’s calculate: m = Q / qb = 23 * 10 ^ 9 / (46 * 10 ^ 6) = 500 kg.
Answer: They burned gasoline weighing 500 kg.
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