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1. Argon in a light bulb is at 110 kPa, 90?C. The light is turned off, so the argon cools to the ambient temperature of 20?C. Disregard the glass and any other mass and find the specific entropy generation.

2. A rigid tank contains 2 kg air at 200 kPa and ambient temperature, 20?C. An electric current now passes through a resistor inside the tank. After a total of 100 kJ of electrical work has crossed the boundary, the air temperature inside is 80?C. Is this possible?

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