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(Solved): The anhydrous form of Epsom salt is magnesium sulfate. From 16.0 g MgSO4 and 100 mL H2O at 25C. ...
The anhydrous form of Epsom salt is magnesium sulfate. From 16.0 g MgSO4 and 100 mL H2O at 25°C. What is the percent of mass of MgSO4 in a prepared solution? (Density of water at 25°C is 0.997 g/mL). What is the molarity and molality of the prepared MgSO4 solution? (Assume that the density does not change with the addition of MgSO4 to water).
Expert Answer
Given, mass of solute MgSO4 = 16.0 g Volume of water, H2O = 100 mL Density of water = 0.997 g/mL So, mass of solvent, water = Density x Volume = (0.997 g/mL) x (100 mL) = 99.7 g = 0.0997