Match these items. match the items in the left column to the items in the right column.1. freezing equals melting 2 . allows molecular attractions to increase 3. p x v = k 4. v/t = k 5. temperature at which vapor pressure = atmospheric pressurea. normal boiling pointb. boyle's lawc. charles' lawd. cooling effecte. phase equilibrium

1↔e  2↔d  3↔b  4↔c  5↔a

Explanation:

1↔e

freezing equals melting means the rate of freezing becomes equals to rate of melting in a solid-liquid phase-change reaction.This happens at phase equilibrium.

Solid  ⇄  Liquid

2↔d

Molecular attractions increase when a substance undergoes cooling as temperature is reduced.More temperature implies less molecular attraction.

3↔b

Boyle's law gives the pressure-volume relation at constant temperature for a fixed amount of ideal gas.

4↔c

Charles law gives temperature-volume relation at constant pressure for a fixed amount of ideal gas.

5↔a

Normal boiling point is the temperature at which vapor pressure becomes equal to atmospheric pressure.

the answer is c. nacl