no it can't be because of the polutin and many human activities.
If the atmosphere had always been pure oxygen, life as we know it would never have developed. If the atmosphere suddenly became pure oxygen, wild fires would rage throughout the world, and most plants and animals would die in a short time.
Nitrogen exists in the atmosphere as a diatomic molecule, N2, making up about 78% of Earth's atmosphere. This is its stable and natural pure state in the environment.
Without nitrogen in the atmosphere, we would be breathing in nearly pure oxygen, which would be fatal.
no because Uranus' atmosphere is supposed to be pure gas.
Because it's mostly made of pure oxygen.
Helium found in atmosphere will have other gases as impurities. But it can be isolated by suitable method (generally by adsorption of gases) to get pure helium.
welding supply store
Not that you would notice. The moon lost it's atmosphere long ago- not enough gravity. Conditions on the surface are pretty much pure vacuum.
The average pH of pure unpolluted rain is around 5.6. This acidity is due to the dissolved carbon dioxide in the atmosphere forming carbonic acid.
Because too much oxygen is harmful to the environment.
The most straightforward way to make a pure sample of calcium is to electrolyze a molten calcium salt with an "inert" cathode such as platinum. Considerable care is required to prevent reaction of pure calcium with the ambient atmosphere.
Yes, krypton is a pure chemical element. It is a noble gas found in the Earth's atmosphere and is typically isolated through fractional distillation of liquid air.