Chemistry

Question Analysis
This question evaluates the understanding of the triple point on a phase diagram and the behavior of substances above this point.

Key Concept Explanation
The triple point is the unique temperature and pressure at which all three phases (solid, liquid, and gas) of a substance coexist in equilibrium. Above the triple point, the substance will exist in the gas phase if the temperature is increased while keeping the pressure constant.

Step-by-step Solution
1. Identify the triple point: 50 K and 1 atm.
2. Determine the given conditions: T = 60 K, P = 1 atm.
3. Compare the given temperature (60 K) with the triple point temp...