KillGorack / Physics 2010 / As the ideal gas expands from pressure P1 and volume V1 to pressure P2 and volume V2 along the indicated straight line, it is possible that: 1) the temperature stays constant. 2) the internal energy decreases. 3) the gas is changing state. 4) all of the above are impossible for this particular graph. 5) both choices B and C are valid.

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Question As the ideal gas expands from pressure P1 and volume V1 to pressure P2 and volume V2 along the indicated straight line, it is possible that: 1) the temperature stays constant. 2) the internal energy decreases. 3) the gas is changing state. 4) all of the above are impossible for this particular graph. 5) both choices B and C are valid.
Answer 4) all of the above are impossible for this particular graph.