Question

Can you explain how to determine what is the mass in grams of 1.00 mole of O2 gas?"

Answer 1

Sure. First, we need the molecular mass of O2. Can you find that?

Answer 2

You can find it using a regular Periodic Table....

Answer 3

since O2 is two Oxygens that are each 16 grams per mole
so O2 is 32 grams per mole
a mole is 6.023 x 10^23 molecules (this is the avogadro number)
So the mass of 1 molecule of O2 is 32/(6.023 x 10^23) grams
I assume you can use a calculator. It should be 5.3 x 10^-23 grams

Answer 4

correct me if im wrong^

Answer 5

Not quite. You had the answer in the first two sentences.

Answer 6

You said it yourself. O2 has a molecular molar mass of 32 g/mol. The problem asks for the mass of ONE MOLE of O2.

Answer 7

I see. Good to know the difference between one mole, and one molecule!

Answer 8

I'm confused now even more..

Answer 9

That's too bad, this is literally the easiest part of chemistry. Go back to my original post. Do you know the molecular mass of O2? You can find it from the Periodic Table. Please stay.

Answer 10

Is it 32

Answer 11

Good. The molecular mass can also be the molecular molar mass. Therefore, O2 has a molecular molar mass of 32 g/mol.

Answer 12

Since your problem asks for the mass of one mol, can you see a way to cancel out the 'mol' unit and be left with grams?

Answer 13

So the answer is 32.0 grams right?

Answer 14

Yes;

Answer 15

Okay that kinda help can you continue to help me ?

Answer 16

Maybe...

Answer 17

Maybe??? Um.. okay then I'll ask someone else

Answer 18

Lol.

Answer 19

If you post a new question, I'll get around to it if no one else does.

Answer 20

Oh okay I'm new to this I don't really know how to use it my fault

Answer 21

It's k. Close this question, then you can ask another question.