During the combustion of 3 kg of gunpowder, 10.5 MJ of heat was released. Find the calorific value of the powder.
| March 1, 2021 | education
Task data: m (mass of powder taken) = 3 kg; Q (heat released due to combustion of gunpowder) = 10.5 MJ (10.5 * 10 ^ 6 J).
The desired specific heat of combustion of the powder can be determined by the formula: q = Q / m.
Calculation: q = 10.5 * 10 ^ 6/3 = 3.5 * 10 ^ 6 J / kg (3.5 MJ / kg).
Answer: According to the calculation, gunpowder has a specific heat of combustion of 3.5 MJ / kg.
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