Скачать или смотреть Using the periodic table, calculate the molar mass of cobalt(II) chloride hexahydrate, CoCl2·6H2O,…

Using the periodic table, calculate the molar mass of cobalt(II) chloride hexahydrate, CoCl2·6H2O, to 4 significant figures. A 9.835-gram sample of cobalt(II) chloride hexahydrate, CoCl2·6H2O, is dissolved in 150.0 mL of solution. What is the molarity of CoCl2 in the solution? How many grams of cobalt(II) chloride hexahydrate, CoCl2·6H2O, are needed to prepare 500.0 mL of a solution that is 0.150 M in CoCl2? Use the molar mass of CoCl2·6H2O.

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