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Dont get it at all. i dont get what moles are and y they r used.... also dont get what molar mass is, any help?
the mass of one mole of a substance is its molar mass. the molar mass is the relative formula mass in grams. Moles can be used to say how concentrated a solution is, or how much of a substance is is a given volume. I'm not too good at working out moles, but the equation for the number of moles is - number of moles= mass of chemical/molar mass.
ahhh makes sencee XDD thanks Beth :) :D xxxxxxx