Question

solid, liquid, and gas coexist at point e. what does this point on the phase diagram represent? triple point critical point normal melting point

Explanation:

The question states that solid, liquid, and gas coexist at point E. In phase diagrams, the triple point is defined as the unique temperature and pressure where all three phases of a substance are in equilibrium. The critical point is where liquid and gas phases become indistinguishable, and the normal melting point is the melting temperature at 1 atm—neither matches the coexistence of three phases.

Answer:

triple point