An alkene with 16 carbons has a molecular formula of:

(A) C₁₆H₁₆
(B) C₁₆H₃₄
(C) C₁₆H₈
(D) C₁₆H₃₂

The answer is: (D) C₁₆H₃₂
An alkene with 16 carbons has a molecular formula of C₁₆H₃₂.