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17 Nov 2019
What is the freezing point (degree C) of a solution prepared by dissolving 15.6 g of Al(NO_3)_3 in 150 g of water? The molal freezing point depression constant for water is 1.86 degree C/m. Assume complete dissociation of the Al(NO_3)_3. What is the molality of a solution that contains 5.2 g of urea (molar mass = 60 g/mol) in 250 g of benzene (C_6H_6)? Calculate the freezing point of a solution containing 1.25 g of benzene (C_6H_6) in 100 g of chloroform (C_6H_6). A solution containing 0.050 g of an unknown nonelectrolyte in 2.50 g of cyclohexane was found to freeze at 5.1 degree C. What is the molar mass of the unknown substance? How many grams of NaNO_3 would you add to 500 g of H_2O to prepare a solution that is 0.500 m in NaNO_3?
What is the freezing point (degree C) of a solution prepared by dissolving 15.6 g of Al(NO_3)_3 in 150 g of water? The molal freezing point depression constant for water is 1.86 degree C/m. Assume complete dissociation of the Al(NO_3)_3. What is the molality of a solution that contains 5.2 g of urea (molar mass = 60 g/mol) in 250 g of benzene (C_6H_6)? Calculate the freezing point of a solution containing 1.25 g of benzene (C_6H_6) in 100 g of chloroform (C_6H_6). A solution containing 0.050 g of an unknown nonelectrolyte in 2.50 g of cyclohexane was found to freeze at 5.1 degree C. What is the molar mass of the unknown substance? How many grams of NaNO_3 would you add to 500 g of H_2O to prepare a solution that is 0.500 m in NaNO_3?
Jean KeelingLv2
3 Oct 2019