Two litres of an ideal gas at a pressure of $10 \ atm$ expands isothermally at $25^{\circ}C$ into a vacuum until its total volume is $10 \ litres$. How much heat is absorbed and how much work is done in the expansion?
- A$q = 0, w = 0$
- B$q = 80 \ L \ atm, w = -80 \ L \ atm$
- C$q = -80 \ L \ atm, w = 80 \ L \ atm$
- D$q = 0, w = 80 \ L \ atm$
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