Question

As 390 g of hot milk cools in a mug, it transfers 30,000 J of heat to the environment. What is the temperature change of the milk? The specific heat of milk is 3.9 J/g·°C. Show your work for credit.

Answer 1

Answer:

Temperature change of the milk is ΔT =19.72 K

Explanation:

Given :

Mass of milk, m = 390 g

Heat transfer, Q = 30000 J

Specific heat capacity, c = 3.9 J/g °C

Temperature change = ΔT

Therefore, we know that heat released by milk is heat absorbed by the surrounding environment.

Q = m x c x ΔT

30000 = 390 x 3.9 x ΔT

30000 = 1521 x ΔT

Therefore, ΔT = 19.72 K

Thus, the temperature change of the milk is ΔT =19.72 K