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i really need to know as i have a summer 2012 exam :P
yes you need to know the equations and how to use them!
oh god thats the one thing that drives me round the bend in chemistry, moles, molar mass ...
and i dont think they give the equations for it so we need to learn them somehow... :(
yh we do, if u need help there is a really gd powerpoint on how to do moles on this website just search it.
yep definitley they may seem tricky but keep going over them