Question

21 Which formula represents an organic compound?( l) CaH2 (3) H2O2(2) C4H8 (4) P2O5

Answer 1

A Calcium Hydride
Hydrogen Peroxide
Butene
A Lead Oxide
Hydrogen Peroxide is probably true most organic of the 4. I believe it is made in the liver, or some place in the body. Hydrocarbons and heavy metal compounds aren't organic, at all.

Answer 2

in order for it to be organic, it has to have carbon in it no matter what. the answer is C4H8