A sample of methane of mass 45.0 g occupies a container at 310 K. Calculate the work done when the gas expands isothermally against a constant external pressure of 200 Torr until its volume increases by 12.11 L. 1 Torr = 133.33 Pa; MW of methane = 16.04 g/mol and R=8.3145 J/K mol. W = J. 4 sig. fig.

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