Question

A body of water equivalent 0 2 kg is to be heated from 25°C to 75°C. The amount of heat required is
(A) 1kcal
(B) 10cal
(C) 1000 cal
(D) 10 kcal​

Answer 1

Answer:

10 cal

Explanation:

The amount of heat required = mSΔT

S = specific heat of water ( 1 cal /g /°C)

ΔT = change in temperature

m = mass of substance

= 0.2x 1 x (75 - 25)

0.2 x 50

= 10 cal