The amount of heat needed to raise the temperature of 1 kilogram of water 1 degree celsius.

The heat needed to warm 1 kilogram of water by 1°C is 4,184 Joules.

Explanation:

Where:

Q = heat absorbed or heat lost

c = specific heat of substance

m = Mass of the substance  

ΔT = change in temperature of the substance

We have mass of water = m = 1 kg  = 1000 g

Specific heat of water= c = 4.184 J/g°C

ΔT = 1°C

Heat absorbed by the water:

The heat needed to warm 1 kilogram of water by 1°C is 4,184 Joules.

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