everywhere
One can find medical oxygen solutions from the following sources: Health Oxygen, Portable Oxygen, Oxygen Solutions, Alternative Oxygen Solutions, to name a few.
In the bloodstream
every where
To find the percent of oxygen by mass in a compound, you need to know the molar mass of the compound and the molar mass of oxygen. Divide the molar mass of oxygen by the molar mass of the compound and multiply by 100 to get the percentage.
in the air
Oxygen is everywhere in the atmosphere. The animal simply has to breathe.
Canisters of pure oxygen can be purchased from chemical supply companies. You can also produce pure oxygen through electrolysis of water into hydrogen and oxygen.
In the Air
To find the percent composition of oxygen in Na2O, find the total molar mass of the compound. Then, divide the molar mass of oxygen by the molar mass of the compound, and multiply by 100% to get the percent oxygen.
You can find information about oxygen in science textbooks, online encyclopedias, scientific journals, and reputable websites from scientific organizations. It is also common to find information about oxygen in chemistry and biology resources.
Jo mama
Where there are birds, and animals, and more oxygen.