A gas occupies 200ml volume at a pressure of 760 mm. what volume would it occupy at a pressure of 800mm.

P1V1 = P2V2

To determine the volume of a gas at a different pressure, you can use Boyle's law, which states that the pressure and volume of a gas are inversely proportional when temperature and amount of gas remain constant.

Boyle's Law equation: P1V1 = P2V2

Where:
P1 = Initial pressure (760 mm)
V1 = Initial volume (200 ml)
P2 = Final pressure (800 mm) - The pressure you want to find
V2 = Final volume - The value we are solving for

To find the final volume (V2), we can rearrange the equation as follows:

V2 = (P1 * V1) / P2

Now we can plug in the given values:

V2 = (760 mm * 200 ml) / 800 mm

Simplifying the equation:

V2 = (760 * 200) / 800

V2 = 152000 / 800

V2 = 190 ml

Therefore, the gas would occupy a volume of 190 ml at a pressure of 800 mm.