If the volume of a confined gas is doubled while the temperature remains constant, what change (if any) would be observed in the pressure?

Answer;

The pressure would be half as large

Explanation; According to Boyle's law, the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure, at a constant temperature. The combined gas law states that the pressure of a gas is inversely proportional to the volume and directly related to the temperature. If temperature is held constant, the equation is reduced to Boyle's law. Therefore, if you increase the volume of a fixed amount of gas, its pressure will decrease. Therefore; If the volume of a confined gas is doubled while the temperature remains constant, then the pressure will be halved.