How much energy will be released during the complete combustion of 4t of coal?

univerkov | January 17, 2021 | education

Problem data: m (mass of completely burnt coal) = 4 tons (in SI m = 4000 kg).

Reference values: q (specific heat of combustion of coal) = 2.7 * 107 J / kg.

The released thermal energy from the combustion of 4 tons of coal is determined by the formula: Q = q * m.

Let’s calculate: Q = 2.7 * 107 * 4000 = 10.8 * 1010 J or 108 GJ.

Answer: With the complete combustion of 4 tons of coal, 108 GJ of thermal energy will be released.

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