[arcana]

On this note, can you please tell me how to convert from grams to moles?

And then, can you please tell me briefly how to do empirical formulas?

[skyjumper]

Oxygen or diatomic oxygen?

Regardless what is the molar mass of O (or O2 if the question specified the later)

[arcana]

Oxygen or diatomic oxygen?

Regardless what is the molar mass of O (or O2 if the question specified the later)

Er....I guess it's just Oxygen?

I have .09 grams of just Oxygen. How many moles is that? How do I convert?

[skyjumper]

Molar mass ( look on the periodic table. Thats how many grams are in a mole)

Now if we have the molar mass, and the mass you gave us could'nt we do some math ot get the moles?

(given over molar mass)<- Hint

[arcana]

Molar mass ( look on the periodic table. Thats how many grams are in a mole)

Now if we have the molar mass, and the mass you gave us could'nt we do some math ot get the moles?

(given over molar mass)<- Hint

Oh, so then, does that mean that the molar mass is 16? If the given is .09

Then shouldn't the equation be .09/16 ? Is the answer the amount of moles?

[skyjumper]

Yes, so if one mol = 16g, xmol = .09

Demensional analysis:
1mol/16g x .09g/xmol = (1x.09)/(16) = the answer (about .005)

Thats your conversion factor 1mol=16g.

Another way is to find the mols per gram of a substance (for O, its 1mol/16 or .0625mols per gram.) Take that "oxygen constant" you found and multiply it by the grams you have (.0625mols per gram times .09 grams equals .005mols)