Calculating ion molarity using solute mass A chemist prepares a solution of magnesium bromide (MgBr₂) by measuring out 2.1 g of MgBr₂ into a 300. mL volumetric flask and filling to the mark with distilled water. Calculate the molarity of Br anions in the chemist's solution. Be sure your answer is rounded to the correct number of significant digits. 0 mol L 3 da 4 199

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