1. A gas has a volume of 45 L at a pressure of 140 kPa. What is the volume when
the pressure changes to 300kPa?

The new volume of the gas is 21 L.

Explanation:

Volume of a gas is inversely proportional to its pressure at constant temperature such that,

or

We have,

It is required to find V₂. Using above law or Boyle's law such that :

So, the new volume of the gas is 21 L.

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