Caffeine Has an Elemental Analysis of 49

question 123

Multiple Choice

Caffeine has an elemental analysis of 49.48% carbon, 5.190% hydrogen, 16.47% oxygen, and 28.85% nitrogen. It has a molar mass of 194.19 g/mol. What is the molecular formula of caffeine?

• A)C₄H₅N₂O
• B)C₈H₁₀N₄O₂
• C)C₁₀H₁₄N₂O₂
• D)C₆H₆NO₂
• E)C₅H₇NO

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