Question

How do I describe a method that could beused to separate helium and oxygen gases ? Please help me

Answer 1

check out the molecular diffusion of gases http://en.wikipedia.org/wiki/Molecular_diffusion

Answer 2

How in the world does that help me????

Answer 3

you could take a sample get it below 50k and above 4 k. the oxygen will turn to liquid and the helium will remain a gas.

Answer 4

I don't think helium would bond with oxygen first of all.

Answer 5

No helium and oxygen will not bond but in a gas sample containing only oxygen and helium it is possible to lower the temperature below the boiling point of oxygen at 50kalvin (-223 c) but keep it above the boiling point of helium 4 Kalvin. assuming both are ideal perfect gases. No clue how to get it that cold but I'm sure it's possible.

Answer 6

ok..

Answer 7

So what should I say in all?

Answer 8

Do what zbay suggested, liquefy air (O\(_2\)) by subjecting it to high pressure and low temperatures. Then you could do fractional distillation since you already have have different temperatures to vaporize, it will allow you to separate.

Answer 9

In what method exactly?

Answer 10

What do you mean by "in what method" ???? We just told you.

Answer 11

I would call the method science! but good call on the high pressure abbot I should have mentioned that. What grad are you in hubbabubba? maybe we are giving you a explanation over your grasp of chemistry?

Answer 12

Im a junior :) @zbay

Answer 13

Obviously high school

Answer 14

Hows that related to the question? ?!!!

Answer 15

Well, depending on your grade, it depends how I answer this question. Now I see why you're not familiar with any of the methods I am describing.

At your level, you should probably only know filtration using a coffee filter to separate impurities from liquids, but what you're asking is more complex than high-school level chemistry. That's why.

Answer 16

Ooh k I c what ur saying

Answer 17

Oxygen has a much higher boiling point (90.2 K) than does helium (4.2 K). If you cooled a mixture of helium and oxygen gases using liquid nitrogen (boiling point 77.4 K), oxygen would condense as a liquid but helium would remain as a gas. You could then collect the liquid oxygen and warm it to produce pure oxygen gas, leaving behind the pure helium gas.

Answer 18

Did u just repeated what the other person said cuz its basically same thing

Answer 19

If it's the same thing use either ^_^

Answer 20

And please ppl go to the math section look for my name n help me there please

Answer 21

Haha!