: HEAT CAPACITY AT CONSTANT VOLUME OF HELIUM AND O2 ARE 3/2R AND 5/2 R RESPECTIVELY. IF 2 MOLES OF HELIUM AND 4 MOLES OF OXYGEN ARE MIXED TOGETHER, THE RESULTANT ENTROPY OF THE MIXTURE IS
Answers
Answer:
Isobaric expansion, the ideal gas law
Explanation:
The ideal gas law states: PV = nRT, work performed on the system: W = -∫PdV
U = Q - W = Energy Conservation
Increase in a system's internal energy = heat put into the system - work done by the system on its surroundings
An isothermal process occurs at a constant temperature. P = nRT/V . Because a gas's internal energy is only a function of temperature, U = 0 for an isothermal process. We have W = V1V2PdV = V1V2nRT dV/V = nRTV1V2 dV/V = nRT ln(V2/V1) for the isothermal expansion of an ideal gas.
If V2 > V1, W is negative. Because U is equal to zero, the heat transferred to the gas is Q = W.
An isobaric process is one that occurs under constant pressure. Then there's
dV = P W = PV1V2
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