With the complete combustion of a fuel with a mass of 0.5 kg, 17000 kJ of energy is released.
| July 26, 2021 | education
Problem data: m (mass of burned fuel) = 0.5 kg; Q (thermal energy released due to the combustion of the desired fuel) = 17,000 kJ (17 * 10 ^ 6 J).
The type of fuel burned is determined by the value of its specific heat of combustion: q = Q / m.
Calculation: q = 17 * 10 ^ 6 / 0.5 = 34 * 10 ^ 6 J / kg (34 MJ / kg), corresponds to the specific heat of combustion of charcoal.
Answer: They burned 0.5 kg of charcoal.
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