# chemistry

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to find the molarity of an aqueous solution of an ionic solid what do you need to know?
a... mass of solid, formula of solid, volume of water
b...moles of solid, formula of solid, volume of water
c....mass of solid, formula of solid, volume of solution
d....moles of solid, formla of solid, volume of solid

• chemistry -

You MUST have moles/L.
To obtain moles, you must know grams/molar mass.
c looks good to me. DON'T be fooled into taking a or b. Volume of water and volume of the solution are not the same.

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