Problem: Calculate the empirical formula for each of the following stimulants based on their elemental mass percent composition.caffeine (found in coffee beans): C 49.48%, H 5.19%, N 28.85%, O 16.48%

FREE Expert Solution

Step 1

Assuming 100 g, 49.48 g C, 5.19 g H, 28.85  g N, 16.48 g O


49.48 g C ×1 mol C12.01 g C = 4.12 mol C

5.19 g H ×1 mol H1.008 g H = 5.15 mol H

28.85 g N ×1 mol N14.01 g N = 2.06 mol N

16.48 g O ×1 mol O16.00 g O = 1.03 mol O


Step 2


View Complete Written Solution
Problem Details

Calculate the empirical formula for each of the following stimulants based on their elemental mass percent composition.

caffeine (found in coffee beans): C 49.48%, H 5.19%, N 28.85%, O 16.48%

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Empirical Formula concept. You can view video lessons to learn Empirical Formula. Or if you need more Empirical Formula practice, you can also practice Empirical Formula practice problems.