Thursday, December 10, 2009

What is the change in internal energy of the gas?

A 100 W electric heater (1W = 1 J/s) oper-



ates for 10 min to heat the gas in a cylinder.



At the same time, the gas expands from 1 L to



14 L against a constant atmospheric pressure



of 4.246 atm. What is the change in internal



energy of the gas? Answer in units of kJ

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