The answer is three.
There are three type types of oxygen therapy system. The Compressed Oxygen Cylinders or commonly known as green tanks, the Oxygen Concentrators, and the Liquid Oxygen Systems. The type of oxygen system you need varies on the amount oxygen you need.
1 mole= 602,200,000,000,000,000,000,000 its just this huge number! =6.022 x 10 to the power of 23. So that's it I guess!
C. 14
you would subtract the mass number from the protons or the atomic number because in order to find the mass number you would add the protons and neutrons :)
Answer:
Many things, but i think a toaster...
Explanation:
