Question

A solution is prepared by dissolving 25 grams of sodium sulfate in enough water to give a total volume of 500. mL. The molar mass of sodium sulfate is 142 grams per mole. What is the molarity of the solution?
mols = grams/molar mass.
Solve for mols.

M = mols Na2SO4/L soln
Solve for M.

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