Using the compound for Ibuprofen C13H18O2 find molecules of Ibuprofen that contain 2.84 x10 23 atoms of Hydrogen

Question

So for every 1 mol of H= 6.022 x 10 23 molecules of H? (Not sure if Im going in the right direction?) Having trouble setting this up or 1 mol of C13H18O0= 13 mol C, 18 mol H, and 2 mol O

Answer 1

1 mol C13H18O2 contains 6.022E23 molecules C13H18O2 and 15*6.022E23 atoms of H. We want just 2.84E23 H; therefore, we use the fractional amount like so.
6.022E23 molecules C13H18O2 x (2.84E23/18*6.022E23) = ??

Answer 2

How many molecules are of Ibuprofen are present in this same tablet.