How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c

Question

asked Jan 23, 2020 215k views

1 Answer

Adhamzhon Shukurov · Answer 1 · 2020-01-27T13:05:41+0000

Heat energy required to change the temperature is given by

$Q = ms\Delta T$

here we know that

m = 225 g = 0.225 kg

s = 4186 J/kg C

T_i = 5 ^0C

T_f = 35 ^0C

now from above formula we will have

Q = (0.225 kg)(4186 J/kg C) (35 - 5)

Q = 28255.5 J

So it will remove 28255.5 J heat from the water