Please see attachment for full problem statement.
By applying a pressure of 200 atm, you can compress water to 99% of its usual volume. Sketch this process on a PV diagram, and estimate the work required to compress a liter of water by this amount. Does the result surprise you?
It shows how to calculate the work done to compress 1 liter water to 99% of its usual volume. It also sketches the compression process on a PV diagram. The solution is detailed and has a '5/5' rating.