A laboratory bottle contains 0.250 lb of pure caffeine, C H N O

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

A laboratory bottle contains 0.250 lb of pure caffeine, C8_8H10_{10}N4_4O2_2. Determine how many caffeine molecules are present in the bottle. (1 lb = 453.6 g; molar mass of caffeine = 194.19 g mol−1^{-1}.)

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