What happens to the molar volume when the temperature increases

The molar volume increases

Explanation:

By the Law of Charles-Gay Lussac (for ideal gases) which can be applied to a real gas, we can say that when a fixed mass of gas is heated, at constant pressure, its volume increases.

Law of Charles-Gay Lussac says:

V(Volume)= K(proporcionality constant)* T(Temperature)

or

Initial Volume/Inicial Temperature=Final Volume/Final Temperature

You can calculate the Final Volume.

This is because the temperature increases the energy of the molecules and also their speed, therefore the volume increases.

For example, if two moles of a gas have a constant pressure, as their temperature increases, their volume will also do so.

radioactive decay occurs in unstable atomic nuclei – that is, ones that don't have enough binding energy to hold

the nucleus together due to an excess of either protons or neutrons.

we can conclude that the melting point of table salt is above room temperature (it's actually 801 deg c). the melting point of mercury must be below room temperature (- 39 deg c).