Question

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

Explanation:

On a heating - curve, the flat - sections represent phase - changes. During a phase - change from solid to liquid (melting), both solid and liquid states of matter are present simultaneously. The part of the heating curve labeled B is a flat - section which indicates a phase - change. In this case, it is the melting process where solid and liquid co - exist.

Answer:

Solid and liquid mixture