7. Calculate the work associated with the expansion of a gas from 42.0 L to 79.0 L at a constant pressure of 14.0 atm.
(A) 518 L·atm
(B) –518 L·atm
(C) –1.11 × 103 L·atm
(D) 588 L·atm e. 1.11 × 103 L·atm

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