How much heat will be released during the complete combustion of 100 kg of anthracite?

The amount of heat that will be released during the complete combustion of anthracite is calculated by the formula:
Q = q * m, where q is the specific heat of combustion of anthracite (we take q = 30 MJ / kg = 30 * 10 ^ 6 J / kg), m is the mass of anthracite (m = 100 kg).
Let’s calculate the released amount of heat:
Q = q * m = 30 * 10 ^ 6 * 100 = 3 * 10 ^ 9 J = 3 GJ.
Answer: Heat will be released in the amount of 3 GJ.