Krypton, Kr, has a triple point at 169°C and 133 mmHg and a critical point at 63°C and 54 atm. The density of the solid is 2.8 g/cm3, and the density of the liquid is 2.4 g/cm3. Sketch a rough phase diagram of krypton. Circle the correct word in each of the following sentences (and explain your answers).
a. Solid krypton at 130 mmHg (melts, sublimes without melting) when the temperature is raised.
b. Solid krypton at 760 mmHg (melts, sublimes without melting) when the temperature is raised.