Question

Heat absorbed due to change in the state of object = ? (Formula is incomplete)

Answer 1

Answer:Calculate heat absorption using the formula:

Q = mc∆T

Explanation:Q means the heat absorbed, m is the mass of the substance absorbing heat, c is the specific heat capacity and ∆T is the change in temperature.

As an example, imagine increasing the temperature of 2 kg of water from 10 degrees C to 50 degrees C. The change in temperature is ∆T = (50 – 10) degrees C = 40 degrees C. From the last section, the specific heat capacity of water is 4,181 J / kg degree C, so the equation gives:

Q = 2 kg × 4181 J / kg degree C × 40 degrees C

= 334,480 J = 334.5 kJ

So it takes about 334.5 thousand joules (kJ) of heat to raise the temperature of 2 kg of water by 40 degrees C.