2. Calculate the mass of sodium chromate Na2CrO4 in a 100 ml flask based on the titration results. 18.0 ml of a 0.060 mol/l Mohr's salt solution were added to a 10.0 ml aliquot of sodium chromate solution, and 12.0 ml of KMnO4 with a concentration of C1/z = 0.05 mol/l were spent on titrating the excess.

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