Pine wood with a volume of 0.01 m3 was burned in the furnace. How much warmth has this room received?

Pine wood with a volume of 0.01 m3 was burned in the furnace. How much warmth has this room received? (The density of pine is 440 kg / m3, and its specific heat of combustion is 1.0 * 10 ^ 7 J / kg.)

Given:

V = 0.01 m ^ 3 – the volume of firewood burned in the oven;

ro = 440 kg / m ^ 3 – density of pine;

q = 1 * 10 ^ 7 Joule / kilogram – specific heat of combustion of pine.

It is required to determine Q (Joule) – the heat that will be released during the combustion of firewood.

Let’s find a lot of burnt firewood:

m = ro * V = 0.01 * 440 = 4.4 kilograms.

Then the amount of released heat will be equal to:

Q = q * m = 1 * 10 ^ 7 * 4.4 = 4.4 * 10 ^ 7 Joule.

Answer: as a result of the combustion of firewood, an energy equal to 4.4 * 10 ^ 7 Joules will be released.