What happens to a flexible container of gas when it is heated

There is an increase in volume of the container, because it is a flexible container and he no fixed volume.

Explanation:

Because of the application of temperature, the molecules tends to expand and will try to free up.

Because the container the fas is inside is flexible, it will amount to increase in volume.

V1/T1 = V2/T2

Showing the connection between volume and temperature.