Question

How many mol of nitrogen is in 0.30 mol of caffeine

Answer 1

The   moles  of  nitrogen   in  0.30  mole  of   caffeine  is  calculated   as  follows

write  the  chemical   formula  = C8H10N4O2

for  this   case  from  the  chemical  formula  we  have   4  atoms  of  nitrogen   in  caffeine

therefore  moles of  nitrogen  in  caffeine =  4  x0.30  =1.2  moles

Answer 2

Answer:

Moles of Nitrogen in 0.30 moles of caffeine is 1.2

Explanation:

The molecular formula of caffeine is C8N4O2H10.

Based on the formula stoichiometry:

1 mole of caffeine contains-

8 moles of Carbon (C)

4 moles of nitrogen (N)

2 moles of oxygen (O)

10 moles of hydrogen (H)

Therefore, # moles of Nitrogen (N) in 0.30 moles of caffeine would be:

$= \frac{0.30\ mole\ caffeine * 4\ moles\ N}{1\ mole\ caffeine} = 1.2\ moles$