Chemistry

Question Analysis
This question evaluates the understanding of the energy changes associated with phase transitions, specifically sublimation.

Key Concept Explanation
Sublimation is the process where a solid directly transitions to a gas. This process is endothermic, meaning it requires energy to overcome the intermolecular forces in the solid.

Step-by-step Solution
1. Identify the phase transition: Solid → Gas (sublimation).
2. Determine the energy change: Sublimation is an endothermic process, requiring energy.
3. Therefore...