Which gas is highly compressible?

Which gas is highly compressible?

Gases are compressible because most of the volume of a gas is composed of the large amounts of empty space between the gas particles. At room temperature and standard pressure, the average distance between gas molecules is about ten times the diameter of the molecules themselves.

How much work is done when a gas expands into a vacuum called free expansion?

Free expansion of a gas occurs when it is subjected to expansion in a vacuum (pex=0). During free expansion of an ideal gas, the work done is 0 be it a reversible or irreversible process.

What is work done in a vacuum?

When the gas expands in a vacuum, there is no opposing force, that is, Pext = 0. The work done by a system during such expansion is W = – Pext ∆V = 0. Thus, work done in a vacuum is zero.

How much work is done in a vacuum?

So the work done against the Vacuum is simply 0.

Can work even in vacuum?

Therefore the minimum work done is when the external pressure is 0, which is the case under vacuum. This would mean that the work done under vacuum is 0. This is called free expansion. The greater the opposing force then the greater the amount of work done is (as work is equal to force applied over a distance).

Can work done against a vacuum?

Work done, When the gas is expanding against vacuum, there won’t be any work done by the gas as the external pressure is zero. Hence work done by the gas against vacuum is zero.

Is vacuum equal to zero?

Vacuum measurements must, therefore, be less than zero. Negative gage pressure generally is defined as the difference between a given system vacuum and atmospheric pressure.

Why no work is done when gas expands against vacuum?

So, when a gas at high pressure expands against vacuum, the work done is zero as external pressure is zero.

How do you know if work is done?

Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work.