Why are gases measured in volume Why isn't it measured in grams?

Answer 1

Ease of measurement is the simple answer. The mass of a gas will almost always be small compared to the mass of the vessel used to mass it in, so it's not so easy to find the mass of a gas. You can though---toss an empty ball on a good balance and then blow it up. You definitely get a change in mass. Of course if you know the volume, pressure, and identity of a gas, calculating its mass is fairly easy using the ideal gas law.

Answer 2

That is because a gram is a unit of mass. A substance like CO2 can either be measured either in units of mass (grams, kilograms, milligrams), or of volume (liters, cubic meters, etc.), depending on the context. A chemist may also just indicate the number of moles - this gives an idea of how many molecules there are in a sample.

Answer 3

Gas isn't really a... Weight.

UNLESS you are to put it in a container

And it has a lot of gas, it's possible for gas to be measure for volume.

Reason is gas is a bit heavier than air.. I think lol!! Hope this help!

Answer 4

the kilogram (Kg) is a unit of mass, while the the liter (l) is a unit of volume. We typically measure gasses by volume. Then we can compute their mass in Kg if we know their density at a given temperature using the Handbook of Chemistry and Physics.

Answer 5

It is convenient to take a liter as volume und measure the mass of the gas.

Answer 6

Because the same amount of gas will always weigh the same while the volume will vary with pressure.

Answer 7

Usually, if it's a thick liquid it'll be hard to measure in say, a measuring cup. so they measure by weight.

Answer 8

either.

depends on your method.