Help with the formula to convert from and to moles from milliliters/molecules/grams

From what I understand, and please do correct me:

grams*molar mass = grams
grams/molar mass = moles

6.022 * 10^23 * moles = Molecules
I don't know how to get from molecules to moles. Help me out?

Volume only applies to a gas.:
moles*22.4=volume
volume/22.4=moles

Thank you for all the help! Studying for finals :) wish me luck.

There are only two simple formulas yo need to know about

moles = mass / Molar mass

moles = v / Molar volume

Do this: make a triangle and split it into 3 parts like this:

/\
/ \
/ m \
/------- \
/ | \
/ n | M \
------------------

Now the n = moles, m = mass and M = molar mass

If you want to find n, cover it up ;and you get m/M, if you want to find m cover it up and you get mM, if you need to find M, cover it up and you get m/n

Do the same for n = v/V this time v = some volume, and V = 22/4L/mol or 24.8 L/mol

This is the "triangle" method for remembering these little formulas.

One mole of anything has 6.023 x 10^23 particles in it.

So moles = # or particles / 6.023 x 10^23 So if you were given a problem that said it had 3.25 x 10^22 particles and you had to find the number of moles you would just

go: 3.25 x 10^22 / 6.023 x 10^23 = 0.0539 moles.

OK?