Ask Question
1 June, 03:46

Caffeine, a stimulant found in coffee and soda, has the mass percent composition: c, 49.48%; h, 5.19%; n, 28.85%; o, 16.48%. the molar mass of caffeine is 194.19 g/mol. part a find the molecular formula of caffeine. express your answer as a chemical formula

+4
Answers (1)
  1. 1 June, 06:44
    0
    Assuming 1 mole of caffeine, therefore the mass is 194.19 grams.

    C = 0.4948 * 194.19 grams * (1 mol / 12 grams) = 8

    H = 0.0519 * 194.19 grams * (1 mol / 1 grams) = 10

    N = 0.2885 * 194.19 grams * (1 mol / 14 grams) = 4

    O = 0.1648 * 194.19 grams * (1 mol / 16 grams) = 2

    So the molecular formula is:

    C8H10N4O2
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “Caffeine, a stimulant found in coffee and soda, has the mass percent composition: c, 49.48%; h, 5.19%; n, 28.85%; o, 16.48%. the molar mass ...” in 📙 Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers