Caffeine has an elemental analysis of 49.48% C, 5.190% H, 16.47% O, and 28.85% N.It has a molar mass of 194.19 g/mol.What is the molecular formula of caffeine?

Question

Quizplus · Accepted Answer

The empirical formula mass of C₄H₅N₂O is approximately 97.1 g/mol. The molar mass of caffeine is 194.19 g/mol, which is about twice the empirical formula mass, indicating the molecular formula is C₈H₁₀N₄O₂.

Caffeine Has an Elemental Analysis of 49