Question

1a. An aqueous solution has a Molarity of 1.632 M. The density of the solution is (1.150x10^0) g/mL and the solute has a molar mass of (1.33x10^2) g/mol. What is the molality of this solution?

1b. An aqueous solution has a mass percent of solute of 18.4%. The density of the solution is (1.400x10^0) g/mL and the solute has a molar mass of (1.77x10^2) g/mol. What is the molality of this solution?

1c. An aqueous solution has a molality of (4.81x10^-1) m. The density of the solution is (1.3400x10^0) g/mL and the solute has a molar mass of (1.620x10^2) g/mol. What is the mole fraction of solute of this solution?

1d. An aqueous solution has a mass percent of solute of (3.4200x10^1)%. The density of the solution is (1.330x10^0) g/mL and the solute has a molar mass of (1.54x10^2) g/mol. What is the molality of solute of this solution?

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Answer 1

Mole molality - 1401 moke of solente & moler mass mass af solute In 1kq ad salmenta .48 1 more & 1629 I onde 71.92 g mass ? קשטן Aquas solection on = solvent water molep of solvent in 55-56 molasmass mole mole of solute = 64 B 1 mole mole of solvent - 55.56 mole. af solete mole of salute mole of solute & mole of solvent .481 more 55.56 mole t.481 mole oo 850 moke fraction id Massy of solute 34.2% density of solection = 1.33g al mass al 100 ml al solution valume x density 100ml x 1 33 glad = 1339 mass af solvent of solection mass and solute 133 g - 34.28 98. gg solulen molex of solute in 34.29 342g mass mars moarmars 15 eggmole 1222 moll no of mole 222 mole Molality - mass of soleadinke .0988 kg 2.25 molal