5. The volume of a sample of helium is 4.50 L at 20.0°C and 203.0 kPa. What will its volume be
at 10.0"C and 203.0 kPa?

The volume will be 2.25 L.

Explanation:

As per Charle's law, the volume of a gaseous system is directly proportional to the temperature provided the system is at constant pressure. Since volume of gas is directly proportional to the temperature of the gas molecules, V∝ T

So, in case there is a change in temperature with constant pressure, then there will be equal change in volume.

Thus, here = 4.50 L , = 20 °C and = = 203 k Pa , = 10°C.

Since, volume and temperature is directly proportional then there will be increase in volume with increase in temperature and vice versa.

So, the new volume is 2.25 L.

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