Data for 5.0% NaCI SolutionMass of 50mL beaker28.93 gMass of beaker + 10.00mL of 5.0% NaCl solution39.28 gDensity of 5.0% NaCl solutionCALCULATIONS: Show all your work and use correct number of significant figures.Data for 10.0% NaCl Solution28.93 gMass of 50mL beaker39.65 gMass of beaker + 10.00mL of 10.0% NaCl solutionDensity of 10.0% NaCl solutionCALCULATIONS: Show all your work and use correct number of significant figures.

From given Density of 5% NaCl and 10% NaCl solutions are determined by finding its mass and…

Answered: Data for 5.0% NaCI Solution Mass of…

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter7: Solutions And Colloids

Section: Chapter Questions

Problem 7.44E

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1. A 50.00 mL stock CaCl2 solution was diluted with water in a 250.0-mL volumetric flask. A 25.00 mL aliquot of this was further diluted to a final volume of 100.0 mL. Finally, 20.00-mL aliquot of the resulting solution was analyzed and found to contain 0.1500 M CaCh2 Solve for the concentration of the stock solution in M. 2. A 50.00 mL stock CaCl2 solution was diluted with water in a 250.0-mL volumetric flask. A 25.00 mL aliquot of this was further diluted to a final volume of 100.0 mL. Finally, 20.00-mL aliquot of the resulting solution was analyzed and found to contain 0.1200 g CaCl2 Solve for %w/v CaCl2 in the stock solution.
Consider 2 aqueous solutions: H2O/NaCl and H2O/CH3OH. Which one will exhibit a positive/negative/no deviation compare to Raoult’s prevision: a. H2O/NaCl and H2O/CH3OH both exhibit a negative deviation b. H2O/NaCl and H2O/CH3OH both exhibit a positive deviation c. H2O/NaCl and H2O/CH3OH don’t exhibit any deviation d. H2O/NaCl negative deviation and H2O/CH3OH positive deviation e. H2O/NaCl positive deviation and H2O/CH3OH negative deviation
12 g of unknown organic sample was dissolve in 706 mL of Dicloromethane (DCM). The boiling point of benzene was increased by 2.72oC. Determine the molecular weight of the unknown sample? Kb of DCM = 2.42oC/m Bb of benzene = 39.6 oC density of benzene = 1.33 g/mL at 25 °C Round your answer to the nearest whole number, no units required.
Prepare the following solutions: 100.0 mL 0.0500 M stock Ca2+ solution 50.0 mL 0.0050 M working standard Ca2+ solution from 0.0500 M Ca2+
What will be the new boilng point of 491ml benzene (Kb = 2.53 oC•Kg/mol; Bp = 80.1oC) when mixed with 11g of naphthalene (MW = 128.17 g/mol) to make a non- eletrolyte solution? Density of benzene = 0.876 g/ml) Round you answer in 2 decimal places, unit is not required.
Preparation of a standard solution of copper(II) sulfate pentahydrate 1. Weigh out accurately 9.99 g of copper(II) sulfate pentahydrate (CuSO4·5H2O) by taring using a clean and dry empty 250-ml beaker. 2. Add tap water to the beaker to reach the 50-mL mark on the side of the beaker. 3. Dissolve all the crystals of CuSO4·5H2O in the water using a clean glass rod for stirring. 4. Then using a glass funnel transfer all the blue solution to a 100-mL volumetric flask. Rinse the beaker with about 10 mL of water and transfer the solution to the volumetric flask. Repeat the rinsing of the beaker with another 10 mL of water and transfer the solution to the volumetric flask. This is called quantitative transfer of the solution. 5. Then add enough water to reach the calibration mark of the volumetric flask. (You will need to use a dropper to add the last few drops of water to ensure the meniscus is on the calibration mark). Close the volumetric flask with a stopper and mix the solution well (so…
Methyl salicylate Emulsion (Forbes Bottle Method)SOLVE FOR ITS WEIGHT/VOLUME REQUIRED TO MAKE 30 ML. SHOW COMPLETE SOLUTION. I NEED IT ASAP AND ANSWER THEM ALL FOR AN UPVOTE. COMPONENTS WEIGHT/ VOLUME REQUIRED Methyl salicylate Oil ? Acacia powder ? Purified water ? TO MAKE 30 ml
Reading for the unknown solution: Trial 1: 7.3 Trial 2: 6.8 Trial 3: 7.3 Reading for the distilled water: Trial 1: 0.9 Trial 2: 0.8 Trial 3: 0.8 How did the answer happen? Show complete solution Normality of Agno3 is: N/50 = 0.02
If 500 mL of a 15% v/v solution of methyl salicylate in alcohol is diluted to 1500 mL, what is the percentage of strength v/v? 10% 5% 20% 2.5%
MULTIPLE CHOICE: Choose the letter of the best answer Please answer all questions correctly 1. The standardization of volumetric solution does not require hydrochloric acid. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 2. In the standardization of its volumetric solution, the primary standard is dried to constant weight, which means drying shall be continued until two consecutive weighings do not differ by more than 0.50 mg. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 3. In the standardization of its volumetric solution, potassium iodide was added to A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E.All of the choices 4. Starch is the indicator of choice for these procedures because it forms intense blue coloration with the solution. A. Permanganometry B. Cerimetry C. Iodimetry D. lodometry E. C and D 5. In the standardization of its volumetric solution, the reaction needs to be…
Pure toluene (C7H8) has a normal boiling point of 111.0°C, and the Boiling Point Elevation Constant is 3.40°C. When 25g of compound A (MM=100) is dissolved in 500g of Toluene, the boiling point of the solution is 113.2°C. Therefore, the activity coefficient of the compound (γA) in the solution is approximately: a) 1.3 b) insufficient data c) 0.65 d) 0.8 (The answer according to the professor is 1.3, but I have tried and can't get that answer, thanks for the help)
PLEASE STATE A, B, C or D! Consider 2 aqueous solutions: H2O/NaCl and H2O/CH3OH. Which one will exhibit a positive/negative/no deviation compare to Raoult’s prevision: a.H2O/NaCl and H2O/CH3OH both exhibit a negative deviation b.H2O/NaCl and H2O/CH3OH both exhibit a positive deviation c.H2O/NaCl and H2O/CH3OH don’t exhibit any deviation d.H2O/NaCl negative deviation and H2O/CH3OH positive deviation e.H2O/NaCl positive deviation and H2O/CH3OH negative deviation

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