# Difference between 1 mole of CH4 and 1 molecule of CH4?

Is there any difference between 1 mole of CH4 and 1 molecule of CH4? or they mean the same thing?

.Scott
Homework Helper
Certainly. 1 mole of CH4 is Avagardro's number of molecules.

So 1 mole of CH4 is about 16.04 grams.
1 molecule of CH4 is about 0 grams.

Certainly. 1 mole of CH4 is Avagardro's number of molecules.

So 1 mole of CH4 is about 16.04 grams.
1 molecule of CH4 is about 0 grams.
It would be correct If I say ' 1 molecule of CH4 = 16 amu?

It would be correct If I say ' 1 molecule of CH4 = 16 amu?
Well, since carbon's atomic mass is 12.0107 u ± 0.0008 u, and hydrogen's atomic mass is 1.00794 u ± 0.00001 u, the math gives us 16,04246 u ± 0.00084 u for methane, so you are correct.

P.S. I don't know how to use latex, that's why I'm writing in plaintext.

Edit: To elaborate on @.Scott 's answer: an atomic mass unit is just a gram per mole so that means if we multiply a molecule of methane (16.04 u) with a mole, it means 16.04 grams/mole * mole which simplifies to 16.04 grams.

CWatters