The densities of sulfur dioxide at several temperatures are as follows: tC 132 145.2 151.7 Picg.ml-1) 0.9567 0.8495 0.7663 Pulg.ml-1) 0.1589 0.2331 0.2998 156.1 0.6718 0.3787 ml a) Plot the data and determine the critical volume (in ".) of sulfur dioxide from the graph. The critical temperature is 157.5C. b) Estimate the critical pressure. c) What is the critical density of the substance