Caffeine, a stimulant found in coffee, tea, and chocolate, contains 49.48% C, 5.15% H, 28.87% N and 16.49%O and has a molar mass of 194.2g/mol. Determine the empirical formula and molecular formula of caffeine.​

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.