Question

a) If you have 5 dinitrogen monoxide molecules, how many nitrogen atoms do you have?
b) If I had 5 moles of dinitrogen monoxide molecules, how many individual nitrogen atoms would I have?

I think the answer for A is 6 nitrogen atoms. but I have no idea on B.

Answer 1

Dinitrogen monoxide is N2O.
If you have five of those then you must have 5*2 = 10 N atoms.
b. 1 mol of N2O contains 6.022E23 molecules so 5 mols will contain 5*6.022E23 N2O molecules of N2O.

Answer 2

The answer is the 5*6.022E23? How?