CH2 is one of the answers so that is right i believe and your explanation makes sence. i don't like how you have to assume though with the given information, but thank you so much for the help!
i know I am not supposed to ask for an answer to a problem, but could someone tell how to go about this question, it should be simple i think..
The molecular mass of a compound of carbon and hydrogen is 42. What is the empirical formula of the compound?
i don't really know what i should...