Question

What is the ratio of carbon atoms to hydrogen atoms in the compound 2CH2 = C2H4?

A. 1 to 9
B. 9 to 1
C. 3 to 6
F. 6 to 3

Answer 1

I see 3 C atoms and 6 H atoms so the ratio must be xC/yH = ??

Answer 2

so 3 to 6...