40. Solving a chemistry problem
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3. Using the basic laws of chemistry, based on the knowledge of ways to express the concentration of solutions, solve the following problems:
c) Calculate the mass of sodium chloride sample required to prepare 130 ml of a solution with a concentration of 0.2 mol / l
c) Calculate the mass of sodium chloride sample required to prepare 130 ml of a solution with a concentration of 0.2 mol / l
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