Caffeine: C8H10N4O2 Consider the molecular formula

Consider the molecular formula for caffeine above.
Using only whole numbers with no decimal point, 2 mol of Caffeine has...

?? mol of carbon
?? mol of nitrogen
?? mol of hydrogen and
?? mol of oxygen

Well, one mole would have 8 moles of carbon, right? Because for every molecule of caffeine, you get 8 atoms of carbon. For two, you just double that amount. So you'd get:

16 carbon
8 nitrogen
20 hydrogen
4 oxygen

Remember, these are moles we're talking about. It's just a number of something - like a dozen.