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100g of water is heated from 30^@C to 50...

100g 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 `4184J//kg//K`):

A

4.2 kJ

B

8.4 kJ

C

84 kJ

D

2.1 kJ

Text Solution

Verified by Experts

The correct Answer is:
B
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