Caffeine is made up of 49.5% C, 5.2% H, 16.5%O, and 28. A solution made up of 8.25g of caffeine and 100.0 of benzene (d=0.887g/ml) freezes at 3. Pure…

Caffeine is made up of 49.5% C, 5.2% H, 16.5%O, and 28.9% N. A solution made up of 8.25g of caffeine and 100.0 of benzene (d=0.887g/ml) freezes at 3.03C. Pure benzene (kf=5.10 degrees C/m) freezes at 5.50C. The simplest and molecular formulas for caffeine are?