The freezing point and boiling point of sulphur dioxide are -72.7(at 1 atm) and -10. The triple point is -75.5 and 1.65x10^-3 atm, and its critical point is at 157 and78atm. On the basis of this information draw a rough sketch of the phase diagram of SO2 Determine the density of silver when silver crystallizes; it forms face-centered cubic cells. The unit cell length is 408.7pm.