It would be 1 or 2 because if the number is higher than 5 you need to round up , if its lower than 5 you need to round down.
Between 23 and 87%
Sorry if I’m wrong
Caffeine has the following percent composition: carbon 49.48%, hydrogen 5.19%, oxygen 16.48% and nitrogen 28.85%. Its molecular weight is 194.19 g/mol.
