What amount of heat will be released during the combustion of 25 kg of firewood, if the heat of combustion

What amount of heat will be released during the combustion of 25 kg of firewood, if the heat of combustion of firewood is 13,000,000 J / kg.

Given:
q = 13000000 J / kg.
mt = 25 kg.
Qg?

1. During the combustion of fuel, the amount of heat will be released:
Qg = q * mt, where q is the specific heat of combustion of the fuel, m is the mass of the substance.
2. Substitute the numerical values:
Qg = q * mt = 13000000 * 25 = 325 * 10 ^ 6 J.
Answer: 325 * 10 ^ 6 J or 325 MJ of heat will be released.