Dear TheWall04;
Sorry! – You selected the wrong 50%, because you must use the molaLity and not the molaRity.
And the MolaLity is defined as the “numbers” of moles per 1000 grams.
So from the definition of molaLity it follows for your “m” in your case:
“m” = (m? / M?) / mB * 1000g
With: m? = mass of the unknown; M? = Molecular weight of the unknown.
mB = mass of Benzene
Now you have only to rearrange this equation to M? = … and you can calculate your preferred Molecular weight. With the use of the ratios (from the element analysis) you can calculate finaly the summformula and tell the name of the unknowned compound.
Do you think it is still too difficalt for you?
(Is now the difference between ‘R’ and ‘L’ Business also clear to you?)
Good Luck!
ARGOS++