How much oil needs to be burned to get the amount of heat equal to 35.2 MJ.

univerkov | March 6, 2021 | education

To find the desired mass of burned oil, we will use the formula: Q = qн * m, whence we express: m = Q / qн.

Variables and constants: Q – the required amount of released heat (Q = 35.2 MJ = 35.2 * 10 ^ 6 J); qн – specific heat of combustion of oil (qн = 4.4 * 10 ^ 7 J / kg).

Calculation: m = Q / qн = 35.2 * 10 ^ 6 / (4.4 * 10 ^ 7) = 0.8 kg.

Answer: You will need to burn 0.8 kg (800 g) of oil.

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