All of the following can be classified as organic molecules except
a. dna
b. glucose
c. polyethylene
d. hydrochloric acid

The correct answer is d. hydrochloric acid

Explanation:

The concept of organic molecule or organic compound implies that it has to contain carbon and hidrogen at least. DNA, glucose (a carbohidrate) and polyetilene contains carbon. In the case of hydrochloric acid it has no carbon and it belongs to a group of inorganic compounds called hydrides.

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

: -)

i think the answer would be d