7. Determine the boundary work done by a gas during an expansion process if the measured pressure and volume values at various states are measured to be 300kPa, 1L; 290kPa, 1.1L; 270kPa, 1.2L; 250kPa, 1.4L; 220kPa, 1.7L; and 200kPa, 2L.
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