Answer :

Boyle's law states that "the volume V and pressure P of a given quantity of gas is inversely proportional to each other if the temperature remains constant".

Boyle's law is expressed as;

P₁V₁ = P₂V₂

Given data:

Initial Volume V₁ = 2.5L

Initial pressure P₁ = 6.0atm

Final pressure P₂ = 7.5atm

Final volume V₂ = ?

We will substitute the values in the above expression to determine the final volume of the gas.

P₁V₁ = P₂V₂

V₂ = P₁V₁ /  P₂

V₂ = ( 6.0 × 2.5 ) /  7.5

V₂ = 15 / 7.5

V₂ = 2.0L

Hence, the volume of the gas decreases to 2.0L.

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