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The weight of a cubic meter of helium can be calculated by multiplying the density of helium (0.1785 kg/m^3 at 0 degrees Celsius and 1 atmosphere pressure) by the volume of one cubic meter. Therefore, the weight of a cubic meter of helium is approximately 0.1785 kilograms. Helium is a very lightweight gas and is commonly used in applications where buoyancy is important, such as in balloons and airships.

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1mo ago
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15y ago

The short answer is 28.9 grams or 1.02 ounces.

But it depends on the temperature and pressure of the air, the helium, and possibly also what's holding the helium.

The upward force on the helium is called the buoyancy. The weight it can "pick up" is the buoyancy less the weight of the helium itself.

At sea level pressure, air has a density of 1.2 g/L at an 'normal' pressure.

Helium is of course less dense, at 0.1786 g/L.

1 (cubic foot) = 28.3168466 L

So the net buoyancy is (1.2 g/L - 0.1786 g/L) * 28.32 L = 28.9 g.

The helium's container matters because some containers are compressible. Eg a rubber balloon will expand as it rises or shrink as it falls. This can affect the buoyancy.

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Wiki User

8y ago

That would depend on the temperature and pressure - but if you assume STP of 273.15 K (0° Celsius) and 1 atm, 1 cubic meter of gas would contain 45.76 moles of Helium. At 4.002 g per mole, that would be 183.2 g or 0.1832 kg. Subject to earth's gravitational acceleration - which is 9.81 m/s², that would weigh 1.797 N.

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13y ago

Depending on how big the balloon is and how much you put in it, it might be around one cubic foot.

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Wiki User

14y ago

That all depends on how much helium has been stuffed into that cubic foot.

Have you ever heard of the process of "compression" ?

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Wiki User

15y ago

.1786 kg

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Q: Weight of cubic meter of helium?
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How much hydrogen is enough to lift up 1 kg weight from the ground?

The weight of standard air is 1.2256 Kg/ Cubic Meter The weight of hydrogen is 0.0857 Kg/ Cubic Meter The weight of helium is 0.1691 Kg/ Cubic Meter Subtracting the weight of hydrogen from air gives you the gross buoyant lift of hydrogen as 1.1399 Kg/Cubic Meter Subtracting the weight of helium from air gives you the gross buoyant lift of helium as 1.0565 Kg/Cubic Meter These values are variable under altitude, pressure, temperature, humidity and purity of gas. Hope this helps you.


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