A 5.0 l sample of gas is cooled from 298 k to 278 k at constant pressure. what is the new volume of the gas?

In order to calculate the final volume of the gas, we may apply Charles Law, which states that for a fixed amount of gas subject to a fixed amount of pressure, the volume and temperature of a gas are directly proportional. This is:

V/T = constant

Using this equation,

5/298 = V/278

V = 4.66 L

The final volume of the gas is 4.66 liters