Question

Calculate the mass percent composition of carbon in C3H10N4O4. Enter your answer as a number to 1

decimal place.

Answer 1

Step-by-step explanation:

I'm using approximate molecular masses.

3 * C = 3 * 12 = 36

10*H = 10* 1 = 10

4*N = 4 *14 = 56

4*O = 4 * 16 = 64

================

Total = 166

Molecular Mass = 166

% Carbon = 36/166 * 100 = 21.7

Carbon = 21.7%

My atomic masses are approximate because all periodic tables are different. Re do the problem using the numbers off your periodic table.