Question

How many mol of nitrogen in 0.40 mol of caffeine

Answer 1

Hey there!

C8H10N4O2 ( caffeine )

1 mole of caffeine  -----------------  4 moles of nitrogen

0.40 mol of caffeine -------------- ??

0.40 * 4 / 1  =

=> 1.6 moles of nitrogen

Hope that helps!