In which case can you get more heat: burning 1 kg of firewood or 1 kg of peat?

Given:

m1 = m2 = 1 kilogram – the mass of firewood and peat is the same;

q1 = 15 * 10 ^ 6 Joule / kilogram – specific heat of combustion of firewood (birch);

q2 = 15 * 10 ^ 6 Joule / kilogram is the specific heat of combustion of peat.

It is required to determine the combustion of which substance will release more heat.

Let’s find the heat obtained by burning firewood:

Q1 = q1 * m1 = 15 * 10 ^ 6 * 1 = 15 * 10 ^ 6 Joules = 15 MJ.

Let’s find the heat obtained by burning peat:

Q2 = q2 * m2 = 15 * 10 ^ 6 * 1 = 15 * 10 ^ 6 Joules = 15 MJ.

Since Q1 = Q2, the same amount of energy will be released when burning wood and peat.

Answer: the amount of heat will be the same.