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Why is oxygen odorless?
Air is 21% oxygen. It is always around us. It would be pointless to be able to smell it, so our noses are not adapted to smell it.
White phosphorus is always kept under water?
Because it will spontaneously react with the oxygen in the air.
Was the atmosphere of the earth always mostly nitrogen and oxygen?
No, the Nitrogen in the air has probably always been there (because nitrogen is rather inert), but originally Earths atmosphere was reducing (it had no free Oxygen) and probably contained large amounts of CO2 and hydrocarbons. The present atmosphere on Earth is the product of biological processes which have slowly introduced free Oxygen into the Oceans and then the atmosphere - life made Earth habitable for life!
Is there more oxygen in seawater or air?
There is more oxygen in the air.
Does inhale air has more oxygen or exhaled air?
Inhaled air is richer in oxygen than exhaled air.
How much oxygen does exhaled air contains approximately?
A small percent . exhaled air always contains oxygen .
What is the average oxygen level in the air at 5000 ft?
The oxygen content of air at any altitude is always about 21%
When there was no oxygen did the water have oxygen in it?
It had to. So yes in a way there always was oxygen. Because if there was no oxygen to would be just hydrogen in the air.
The lungfish always lives in oxygen-poor water and can do so because?
It can supplement its oxygen by using oxygen from air as well as water.
Why you inhale oxygen only?
when you inhale air into your lungs the concentration of oxygen in the blood can be no greater than that in the air.As the blood reaching the lungs is lower in oxygen there is transfer from the air to the blood stream until the concentrations stabilise.However there is no active transfer.Therefore there will always be Oxygen in exhaled air even if the initial oxygen concentration in the blood is zero as the air oxygen and the blood oxygen will reach a steady state equilibrium
The air you breathe is made of 21 percent oxygen and 78 percent nitrogen The oxygen in air is the?
It's the oxygen. Since oxygen doesn't dissolve into nitrogen - air is a mixture, not a solution - you can't call it the solute and the nitrogen the solvent, which may have been the answer you thought you were going to get.
Why is oxygen odorless?
Air is 21% oxygen. It is always around us. It would be pointless to be able to smell it, so our noses are not adapted to smell it.
Original oxygen level in water?
Water has always been two parts hydrogen and one part oxygen.
What chemical is always used in burning?
i think carbon reacts with oxygen in the air to burn things :?
White phosphorus is always kept under water?
Because it will spontaneously react with the oxygen in the air.
Is oxygen a air?
Oxygen is in the air.
When was the air conditioning?
there has always been air conditioning, just not in the condition i want it.
