The substance sulfur dioxide has the following properties:
normal melting point: 200.4 K
normal boiling point: 263.1 K
triple point: 1.7x10^-3 atm, 197.6 K
critical point: 78 atm, 430.7 K
A sample of sulfur dioxide is initially at a pressure of 82.5 atm and a temperature of 269.2 K. The pressure on the sample is reduced to 1.70X10^-3 atm at a constant temperature of 269.2 K. Which of the following are true? Choose all that apply.