Questions
When unit mass of water boils to become steam at 100°C, it absorbs Q amount of heat. The densities of water and steam at 100°C are respectively and the atmospheric pressure is . The increase in the internal energy of water is _________
detailed solution
Correct option is B
dQ=dU + dW= dU +PdVdW=P0V2−V1=P0mρ2−mρ1=P0×11ρ2−1ρ1 ∴dU=Q−P0×11ρ2−1ρ1=Q+P01ρ1−1ρ2Talk to our academic expert!
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