There is a 5.24 ppm of He in air. ppm means that 5.24 parts of helium goes per 1000000 parts of air (million part of air). In % this would be 0.000524% of He.
there is around 78000 lbbs of helium left in the us but around the whole world there is 4 and a half times more than that.
Around 0.12 %.
The density of helium is less than the density of air. You can infer this without doing any calculations by thinking about the classic example of inhaling the helium from a balloon and talking. Your voice gets squeeky high because helium is less dense than air - that is, your sound waves propagate faster through helium than through air, therefore helium is less dense.
Yes, all substances have density. Helium has a density of 0.1664 g/liter at 20°C and one atmosphere of pressure.
0.46 divided by the formula weight of helium (4) 0.46/4=0.115 or 0.12 moles of Helium
they don't float ONLY with helium. They float with any gas that is less dense than air, for instance hydrogen.
Helium is found in the sun. It is also found in the Earth's atmosphere.
Air has many more different substances than helium, which is a single substance. Outside air contains helium.
Helium is lighter than air. so balloons filled with helium will float in air
There are many, but one is Helium
Helium is lighter than air. So helium balloon rises in air.
Helium, hydrogen, and air are gases.
Helium is generally used in helium balloons and blimps. Helium is lighter than air and these items will float in air
Helium is lighter than air and a balloon filled with helium may rise up.
Yes. air is heavier than helium.
helium is a gas. air is a bunch of different gasses.
Helium has a lower density than air.
Helium is a lighter element compared to air, helium also has fewer molecules than air.
because helium is ligter than air