018 (part 1 of 2) 10.0 points Gas in a container is at a pressure of 1.6 x 105 Pa and a volume of 5.4 ms. What is the work done by the gas if it expands at constant pressure to three times its initial volume? Answer in units of J. 019 (part 2 of 2) 10.0 points What is the work done by the gas if it is com- pressed at constant pressure to one - third of its initial volume? Answer in units of J