Help with percentages please!
Report Submission - Extraction Of Caffeine Extraction of Caffeine Are you completing...
Report Submission - Extraction Of Caffeine Extraction of Caffeine Are you completing this experiment online? Yes Data Collection Mass of 2 Vivarin tablets (0) Mass of crude caffeine (a) Mass of recrystallized caffeine (a) (14pts) Calculations 0.703 0.488 0.415 (0/5pts) Percent by mass of caffeine in Vivarin tablets (w/w) 69.31% (-5 pts) Incorrect (0/5pts) Percent isolation of caffeine (1) 69.32% (-5 pts) Enter a value within the range provided 234 (2/2pts) Caffeine melting point (lit) (°C)