# What amount of heat will be released during the complete combustion of 100 kg of Karaganda coal?

Given:

m = 100 kilograms is the mass of Karaganda coal;

q = 15 MJ / kg = 15 * 10 ^ 6 Joule / kilogram is the specific heat of combustion of coal (since Karaganda coal has many brands, the specific heat of combustion of brown coal was taken to solve the problem).

It is required to determine Q (Joule) – how much heat will be released during the complete combustion of coal of mass m.

To determine the amount of heat, you must use the formula:

Q = q * m = 15 * 10 ^ 6 * 100 = 15 * 10 ^ 8 Joules = 1500 MJ.

Answer: with complete combustion of 100 kilograms of coal, an energy equal to 1500 MJ will be released.

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