The shc of water is 4200j/kg°how much energy will it take to raise 1kg of water from 20°c to 100°c?

Q = 336000 j

Explanation:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Given data:

Specific heat capacity = 4200 j/Kg °C

Mass of water = 1 Kg

Initial temperature = 20°C

Final temperature = 100°C

Heat required = ?

Solution:

ΔT  = T2 - T1

ΔT  = 100°C - 20°C

ΔT  = 80 °C

Q = m.c. ΔT

Q = 1 kg ×4200 j/Kg °C ×80 °C

Q = 336000 j