help this link i can’t read chemical formulas?

Published February 10, 2011

Question by vanessa: help this link i can’t read chemical formulas?
http://cerhr.niehs.nih.gov/chemicals/stimulants/amphetamines/amphetamines.html
Methamphetamine differs in chemical structure from Dextroamphetamine by having
a.Two CH3 molecules
b. No OH molecules
c. Two H molecules on the N-arm
d. None of the above
is it a b or c!!!

Best answer:

Answer by Elphie
Dextroamphetamine: C9H13N
Methamphetamine: C10H15N

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