12/14/2016 RWW03 Concentration Unitshttp://www.webassign.net/web/Student/AssignmentResponses/view_key?dep=14314084 1/3Current Score : – / 100 Due : Sunday, September 4 2016 11:59 PM EDT1. –/8 pointsHow many grams of NaCl are required to prepare 546. mL of a 0.383M solution of NaCl?(No Response) 12.22 g NaCl2. –/14 pointsHow many millimoles of Cr2O72 ions and K1+ ions are present in 301. mL of a 0.0550 M K2Cr2O7?(No Response) 16.6 mmol Cr2O72 (No Response) 33.2 mmol K1+3. –/8 pointsHow many ml of 0.530M Na3PO4 are required to deliver 34.0 mmol Na1+ ions?(No Response) 21.4 mL.4. –/8 pointsHow many mL of 0.330 M NaNO3 could be made from 8.05 g of NaNO3?(No Response) 287.0 mL5. –/8 pointsWhat is the mass percent of sucrose (C12H22O11, Mm=342 g/mol) in a 0.448m sucrose solution?(No Response) 13.29 % C12H22O11RWW03 Concentration Units ( Homework)Paddy SheehanCH 201, section 002, Fall 2016Instructor: Robert WarrenWebAssignThe due date for this assignment is past. Your work can be viewed below, but no changes can be made.12/14/2016 RWW03 Concentration Unitshttp://www.webassign.net/web/Student/AssignmentResponses/view_key?dep=14314084 2/36. –/8 pointsHow many grams of K3PO4 (Mm=212 g/mol) must be added to 345 g of water to make a solution with acolligative molality of 0.245 m?(No Response) 4.48 g K3PO47. –/14 pointsWhat are the mole fraction (X) and molality (m) of ethanol (C2H5OH) in an aqueous solution that is35.0% ethanol by volume? The density of water is 1.00 g/mL and that of ethanol is 0.789 g/mL.mole fraction = (No Response) 0.1425 ;molality = (No Response) 9.224m8. –/8 pointsTo what volume should 32.00 mL of a 9.20 M HCl solution be diluted to prepare a 0.500 M HCl solution?(No Response) 588.8 mL9. –/8 pointsWhat is [H1+] in a solution prepared by mixing the following solutions27.9 mL of 6.40 M HCl29.9 mL of 6.80 M HCl17.8 mL of 2.20 M HCl15.2 mL of water[H1+] = (No Response) 4.64 M10.–/8 pointsA solution is found to be 0.0591% by weight AlBr3. What is the concentration of the Br1 ion expressed inppm?(No Response) 531 ppm12/14/2016 RWW03 Concentration Unitshttp://www.webassign.net/web/Student/AssignmentResponses/view_key?dep=14314084 3/311.–/8 pointsA 0.158M solution of X (Mm = 165 g/mol) has a density of 1.149 g/ml. What is the molality of X in thesolution?(No Response) 0.141
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