Answer on Question #55935-Physics-Molecular Physics-Thermodynamics
Calculate how much heat is needed to be supplied to a gas at a pressure of 1.25 X 10^5 Pa, such that the
pressure increases by 25 per cent at constant volume, and the internal energy by 120J.
Solution
For a constant-volume process: there is no work done by the gas: 𝑊 = 0.
The heat added to the gas is equal to the change in internal energy:
𝑄 = Δ𝑈 = 120𝐽.
Answer: 120J.
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