How much heat is released during the complete combustion of 1.3 kg of anthracite?

Initial data: m (mass of burnt anthracite) = 1.3 kg.

Reference data: q (specific heat of combustion of anthracite) = 30 MJ / kg = 30 * 10 ^ 6 MJ / kg.

The amount of heat that should be released during the complete combustion of 1.3 kg of anthracite is calculated by the formula: Q = q * m.

Let’s calculate: Q = 30 * 10 ^ 6 * 1.3 = 39 * 10 ^ 6 J or 39 MJ.

Answer: With the complete combustion of 1.3 kg of anthracite, 39 MJ of heat should be released.