How to Calculate the Volume of a Gas Tank at Standard Pressure

Question:

A gas tank holds 2785 L of propane, C3H8, at 830. mmHg. What is the volume of the propane at standard pressure?

Answer:

3041.5L

When calculating the volume of a gas tank at standard pressure, we can use Boyle's law equation. In this case, the initial volume (V1) is 2785 L, the initial pressure (P1) is 830 mmHg, and the final pressure (P2) is standard pressure, which is 760 mmHg.

Boyle's law states that P1V1 = P2V2, where V2 is the final volume we are trying to find. Plugging in the values we have:

830 x 2785 = 760 x V2

Dividing both sides by 760 gives us:

V2 = (830 x 2785) / 760

V2 = 3041.5L

Therefore, the volume of the propane at standard pressure is 3041.5L.