The volume of a gas at 5.0 atm is 3.5 L. What is the volume of the gas at 7.0 atm at the same temperature? 2.5 L 5.0 L 10. L 12 L

We use the Boyle's law to solve this question. At constant temperature, the volume of a fixed mass of a gas is inversely proportional to its pressure. When comparing the fixed mass of gas at different conditions under this law, the expression below is used.

P₁V₁=P₂V₂

P₁=5.0 atm

P₂=7.0atm

V₁=3.5 L

V₂=V

5.0*3.5=7.0*V

V = (5.0*3.5) 7.0

V=2.5 L