Helium comprises only the tiniest portion of the earth's atmosphere. It represents only about 5.24 parts per million by volume, which is about 0.000524% of the atmosphere. Use the link below to the Wikipedia post on what's in Earth's atmosphere. You might be surprised!
Helium, hydrogen, and air are gases.
Helium has a lower density than air.
because helium is ligter than air
Air has many more different substances than helium, which is a single substance. Outside air contains helium.
helium is less dense than air. :) so helium will float better than air
Helium is lighter than air. so balloons filled with helium will float in air
99.993 % into Helium, .007 % into energy.
Helium is lighter than air. So helium balloon rises in air.
Helium, hydrogen, and air are gases.
Yes. air is heavier than helium.
helium is a gas. air is a bunch of different gasses.
Helium has a lower density than air.
because helium is ligter than air
Helium is lighter than air. So balloons or air ships filled with helium will float.
Helium is lighter than air. hence helium balloon will float in air.
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.
Air has many more different substances than helium, which is a single substance. Outside air contains helium.