During the combustion of fuel with a mass of m = 50 kg, Q = 750 MJ of heat was released. What kind of fuel is it?

Q = q * m, expressing q we get q = Q / m.
q – specific heat of combustion of fuel, m – mass? Q is warmth.
750 MJ = 750,000,000 J
q = 750,000,000 J / 50 kg = 15 * 10 ^ 6 J / kg.
Answer: brown coal



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