The ratio of the initial to the final pressure of a given
mass of gas is 1: 1.5. calculate the final volume of the
gas if the initial tolume was 300m at the same tempe-
rature

The final volume of the  gas is : 200 unit.

Explanation:

Boyle's law states experimentally that the pressure gradually increases as the volume starts decreasing gradually (experiment conduct at constant temperature).At constant temperature, pressure is inversely proportional to the volume. i.e. p1v1= p2v2

p1=initial pressure

v1= initial volume

p2= final pressure

v2= final volume

On simplifying the Boyle's law equation we can easily get one unknown term if three terms are known.So, v2= (p1/p2)*v1=(1/1.5)*300= 200 Ans.

D. pray lands grasslands swamps