At-273Cvolume of gas is 0. But any gas is a physical quantity having some mass. How can its volume be 0? What happens when temperature is reduces further?
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Solution
In general, the substances contract on cooling and the intermolecular motion and internal energy reduces.
On cooling, the physical properties such as pressure and volume decreases and becomes zero at a temperature which is well before reaching absolute zero (- 273 C).
As no gas exists at absolute zero ( - 273 C) , both volume and pressure of the gas become zero.