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Helium accounts for around 8% of the volume of all matter (baryonic particles) in the universe.

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Q: What is helium percent by volume?
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What is the volume of 10.9 mol of helium at STP?

The volume of 10.9 mol of helium at STP is 50 litres.


Does helium has volume?

yes i does


Is helium dence?

depends on the size of its container and volume of helium filling it


What percent of hydrogen is fused to helium in the sun and what percent is fused to energy?

99.993 % into Helium, .007 % into energy.


When a helium balloon rises in the air it expands. If the volume of the balloon doubles what happens to the density of the helium inside it?

If the volume of the helium balloon doubles as it rises, the density of the helium inside it decreases. This is because the same amount of helium gas is now spread out over a larger volume, leading to a lower density.


Would a balloon float longer if it had 100 percent helium or half helium and half oxygen?

100% helium


When a helium balloon rises in the air it expands If the volume of the balloon doubles what happens to the density of the helium inside it?

If the volume of the balloon doubles while the mass of helium remains the same, the density of helium inside the balloon would decrease by half. Density is calculated as mass divided by volume, so if volume doubles and mass stays the same, the density will decrease.


What is the percent of helium in the air?

The percentage of helium in Earth's atmosphere is very low, around 0.0005%. Most helium on Earth is found in natural gas deposits underground and is extracted through specialized processes, as it is not a significant component of the air we breathe.


What would be the volume of 1 liter helium gas if transferred to liquid helium?

The volume of 1 liter of helium gas would significantly decrease when converted to liquid helium. Liquid helium has a much higher density compared to helium gas, so the volume would be drastically reduced. The exact volume would depend on the temperature and pressure conditions at which the conversion takes place.


What percent of the Neptunian atmosphere is helium?

Planet Neptune's atmosphere comprises approximately 19% helium (±3.2%).


What is the mixture 15ml of oxygen and 5ml of helium?

It is a gaseous mixture containing 75% oxygen and 25% helium by volume.


Convert a volume of helium gas measurement into fluid ounces?

It would help to know what volume was to be converted!