If a solid piece of naphthalene is heated and remains at 80 degrees c until is is completely melted, you know that 80 is the what?

The given temperature is known as melting point of naphthalene.

Explanation:

Melting point is defined as the temperature at which solid gets converted to liquid.

The temperature remains constant until all the solid has been converted to liquid. At this temperature, solid state and liquid state are present at equilibrium.

We are given:

A solid piece of naphthalene is heated till 80°C until all the solid is melted.

Hence, the given temperature is known as melting point of naphthalene.

answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

hope it