Asubstance has a triple point at −24.5 ∘c and 225 mmhg. what is most likely to happen to a solid sample of the substance as it is warmed from −35 ∘c to 5 ∘c at a pressure of 210 mmhg?

nothing (the solid will remain as a solid).
the solid will sublime into a gas.
the solid will melt into a liquid.

Solid will sublime into a gas.

Explanation:

Triple point is a temperature where the three states of a substance coexist.

If the pressure is lower than the triple point, the substance does not exist as a liquid, so it is impossible that solid melts, or that the solid remains as a solid.

Liquid state is not stable.

c) should be the answer.

∠gdh and ∠edh on edg.

answer is c