Question

You are taking a scuba diving training course. The instructor is discussing

your scuba tanks, and tells you they have a volume of about 11 L and hold
enough gas for a one-hour dive. The instructor also tells you that you take in
about 2 L of gas with each breath. Which is the best explanation for why 11 L
of gas lets you breathe for one hour?
A Because of the high pressure of the water, the amount of gas
needed for each breath decreases.
B It is very cold underwater. This decreases the pressure inside the
tank and allows exhaled gases to be stored and breathed in
again.
© The gas is under pressure in the tank. As pressure increases,
volume decreases. A small tank can therefore hold a large
amount of gas.
Underwater the gas becomes cold enough for it to become a
solid. The solid vaporizes a little at a time to allow you to breathe
for longer

Answer 1

Ur answer would’ve u have too many questions

Answer 2

C

Step-by-step explanation:

The deeper you go into water, the greater pressure there is on everything. This compresses the air inside and causes the volume to shrink.

Sometimes air is measured in bars. Let's assume the Earth's surface pressure is 1. Let's also say that your lungs have 5.5L and the tank has 11L. That's only 2 breathes, but under 200 bars of pressure deep in the ocean? That's 200 x 11, which equals 2200L. That's about 400 breathes.

In addition, if making liters out of thin air doesn't make any sense, there's an alternative where you divide your liters per breath by the bar pressure. So instead of 200 x 11, you can take your 5.5 from your lungs and divide it by 200. That small number, in this case, 0.0275, can serve as how much air you breath deep in the ocean.