58. Решение задачи по химии №006 028

149. a) Calculate the percentage concentration of a sodium sulfate solution prepared by dissolving 240 g of Glauber´s salt Na2SO4 * 10H2O in 760 ml of water.
b) Calculate the molar concentration of a potassium sulfate solution, 20 ml of which contains 1.74 g of a solute.

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