helium in a vacuum (not liquid helium)?

Question

I know compressed air in a tank is heavy-er than at normal presher. So if you put helium in a tank under a high vacuum, Would the tank be lighter?

Answer 1

No. The tank would not weigh less because it contained helium than before the helium was placed into the tank.

Helium is distributed either as a gas at normal temperatures or as a liquid at very low temperatures. Gaseous helium is distributed in forged steel or aluminum alloy cylinders at pressures in the range of 900-6,000 psi (6-41 MPa or 60-410 atm). Bulk quantities of liquid helium are distributed in insulated containers with capacities up to about 14,800 gallons (56,000 liters).

To learn more I suggest you visit the following website:

http://www.madehow.com/Volume-4/Helium.html

Answer 2

Yes.
A vacuum is created by the ABSENCE of the gas. All particles have weight (mass) and therefore, the less there is, the lighter it will be.
Helium is lighter than air ONLY because the weight of the molecules is less than the average weight of the gasses that make up air.
Under pressure, a vessel is heavier because there are more molecules inside of the vessel. A vessel filled with helium under sufficient pressure would be heavier than air because of the increased density and mass of the helium in the vessel.
Once you pull a deep vacuum on a vessel, it will be lighter regardless of what gas was inside the vessel before you pulled the vacuum.

Answer 3

The Higher vacuum is in your tank, the lighter would it be. If the tank is totally empty (nothing inside), the weight would be the minimum. If in this tank you put any gas or liquid or solid ( helium, water, gold, or anything else) the weight will increase.

Answer 4

If you replace a vacuum in the tank with helium the tank will be heavier. A vacuum can have no mass, helium does.

Answer 5

No, Helium although very much lighter than air still has mass.
The tank, at high vacuum will have mass.
Add Helium to it, its mass will increase.

Answer 6

If you put helium into an evacuated tank, the tank would be heavier by the weight of the added helium.

Answer 7

no tank would not be lighter its mass will increase due to mass of helium

Answer 8

Please explain how you put He in a tank and have it under high vacuum? When you apply the vacuum the He would be pumped out.

Answer 9

helium can be converted into liquid by using third law of thermodaynamics at below -273.74 k &at cryogenics condition

Answer 10

compressed helium would be heaver than air (and heavier than non-compressed helium)