## To solve this problem, you can use the equation PV = PV, which states that the product of pressure (P) and volume (V) remains constant as long as the temperature is constant.

Given:

Initial volume (V1) = 20 cubic inches

Initial pressure (P1) = 5 psi

Final pressure (P2) = 10 psi

Using the equation P1V1 = P2V2, we can rearrange it to solve for V2:

V2 = (P1V1) / P2

Substituting the given values:

V2 = (5 psi * 20 cubic inches) / 10 psi

V2 = 100 cubic inches / 10 psi

V2 = 10 cubic inches

Therefore, the new volume of the gas is 10 cubic inches. So the correct answer is option (b).