100 g of water is heated from 30^@C to 5...

100 g of water is heated from `30^@C` to `50^@C` . Ignoring the slight expansion of the water, the change in its internal energy is (specific heat of water is 4184 J/Kg/K)

`84kJ`

`2.1kJ`

`4.2kJ`

`8.4kJ`

Text Solution

Verified by Experts

The correct Answer is:

`Q = msDeltatheta= 0.1 xx 4184 xx 20 = 8.4kJ`

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