Percent by Mass of a Solution

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Calculations of Solution Concentration. CA Standards.

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Percent by Mass of a Solution

(Mass solute + Mass solvent) % by Mass Another way of referring to concentration Basically % composition of a solution Key info: The density of water is handy! Every 1mL = 1gram of H2O % Mass = Mass of solute (Mass solute + Mass solvent) X 100

% Mass Practice If 31 grams of ammonium bromide are dissolved to make a 287 gram solution, what is the % by mass of the solute? If a 64 gram solution is 5.2% sodium acetate, how many grams of solute are inside?

% Mass Practice Round 2 1.940 grams of potassium nitrate are dissolved in 32.0 mL of water. What is the % Mass? 0.243 moles of sodium chloride are dissolved into 250mL of water. What is the % Mass?