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Grade: 10
        The internal energy of a gas is given by U = 1.5 pV. It expands from 100 cm3 to 200 cm3 against a constant pressure of 1.0 × 105 Pa. Calculate the heat absorbed by the gas in the process.
5 years ago

Answers : (1)

Jitender Pal
askIITians Faculty
365 Points
							Sol. U = 1.5 pV P = 1 × 10^5 Pa

dV = (200 – 100) cm^3 = 100 cm^3 = 10^–4 m^3
dU = 1.5 × 10^5 × 10^–4 = 15
dW = 1.5 x 10^5 x 10^-4 = 15
dW = 10^5 x 10^-4 = 10
dQ = dU + dW = 10 + 15 = 25 J

						
5 years ago
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