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A Cylinder Contains 8 5.3×105 Pa5.3 \times 10 ^ { 5 } \mathrm {~Pa}

Question 41

Short Answer

A cylinder contains 8.8 moles of ideal gas, initially at a temperature of 126°C. The cylinder is provided with a frictionless piston, which maintains a constant pressure of 5.3×105 Pa5.3 \times 10 ^ { 5 } \mathrm {~Pa} on the gas. The gas is cooled until its temperature has decreased to 27C27 ^ { \circ } \mathrm { C } For the gas CV=13.73 J/molK\mathrm { C } _ { \mathrm { V } } = 13.73 \mathrm {~J} / \mathrm { mol } \cdot \mathrm { K } The ideal gas constant is R = 8.314 J/mol ∙ K. For this process, calculate:
(a) the work done by gas
(b) the net change in the internal (thermal) energy of the gas
(c) the heat transferred to the gas.

Correct Answer:

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(a) -7200 ...

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