Answer to Question #292586 in Chemistry for Sne

Question

What is the mass percentage of O in C₃H₈O₂?

Answer 1

M (C₃H₈O₂) = 76.1 g/mol

M (C) = 12 g/mol

M (H) = 1 g/mol

M (O) = 16 g/mol

%(O) = (100 x (16 x 2)) / 76.1 = 42%