Mass of 2 Vivarin tablets (g) 0.728 Mass of crude caffeine (g) 0.567 Mass of recrystallized caffeine (g) 0.519 Calculations Percent by mass of caffeine in Vivarin tablets (w/w%) Percent isolation of caffeine (%) Caffeine melting point (lit) (°C) Caffeine melting point (expected) (°C) - provide an expected melting point of the product.

Mass of 2 Vivarin tablets (g) 0.728 Mass of crude caffeine (g) 0.567 Mass of recrystallized caffeine (g) 0.519 Calculations Percent by mass of caffeine in Vivarin tablets (w/w%) Percent isolation of caffeine (%) Caffeine melting point (lit) (°C) Caffeine melting point (expected) (°C) - provide an expected melting point of the product.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter11: Properties Of Solutions

Section: Chapter Questions

Problem 109AE: Patients undergoing an upper gastrointestinal tract laboratory test are typically given an X-ray...

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