Question

in a heating curve, which state of matter is present during the part of the curve represented by b? solid and liquid mixture liquid and gas mixture liquid gas

Explanation:

On a heating - curve, the flat sections represent phase - changes. During a phase - change, two states of matter co - exist. Section B is a flat section where the substance is changing from liquid to gas. So, it represents a liquid and gas mixture.

Answer:

Liquid and gas mixture