Apply algebraic properties, formulas, and relationships to perform operations on real-world problems (e.g., solve for: molality.• Molality is the number of moles of solute dissolved in a kilogram of solvent.molality = moles of solute or molal, mkg of solventSample Problem #1: What is the molality of the example sucrose solution?First Step: Known and Unknown Quantitiesknownunknownmass of sucrose = 0.030464 g C12H2201molality C12H2201 = ? mmass of water = 0.981256 g H,0Second Step: Formulamolality of C12H22O11 = mol of C12H22O11 kg of H,0Third Step: Rearranging, intermediate calculations, and unit conversionsNo rearranging required.Intermediate calculations:molar mass of C12H2201 = (12 x 12.011 g) + (22 x 1.0079 g) + (11 x 15.9994 g) = 342.299 g# mol C12H2201 = 0.030464 g C12H,O1 x1 mol C,,H„01 = 0.000089 mol C12H22O11342.299 g C12H2201Unit conversions:0.981256 g H,Ox_1.00000 kg_ = 0.000981256 kg H,011000.00 gFourth Step:DELL「田 Fourth Step:molality, C12H2201 = 0.000089 mol C1,HO1 = 0.091 m0.000981256 kg H20Sample Problem #2: What is the molality of a solution of 0.20 g of benzoic acid, C,H,O2, in 20.0 g of naphthalene?moles of C,HO2 =0.20 g122 g/mol= 0.0016 mol C,H¢O2molality of C,HO2 =0.0016 mol C,H;O>0.020 kg of naphthalene= 0.080 molal (mol/kg)Note: The "molal" unit is mol of solute/kg of solvent. The molal unit is abbreviated with the lower case letter, m.The molality of the C;HgO2 solution is 0.080 m.Practice Problem #1: What is the molality of a solution of 0.50 g of glucose, CH12O6, 14.3 g of water?O 35 mO 0.35 mO 0.19 mO 0.00019 mDELL&司%24#3

Practice Problem#1: Molality is defined as the number of solute per unit mass of the solvent in…

Answered: Practice Problem #1: What is the…

Practice Problem #1: What is the molality of a solution of 0.50 g of glucose, CgH12Os, 14.3 g of water? O 35 m O 0.35 m O 0.19 m O 0.00019 m

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter7: Solutions And Colloids

Section: Chapter Questions

Problem 7.9E

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Similar questions

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