Choose the correct answer ans write your solution. 1. Solutions of known % (v/v) is prepared by the use of ...a. balance b. volumetric flask c. graduated cylinderd. both b and c2. A brine solution is 13.0 % (w/w). How much salt is there in a sample which weighs150 grams?а. 1.2 gb. 19.5 gc. 30.0 gd. 7.5 g3. What is the molarity of KI in a solution that is 5.00% KI by mass and has a densityof 1.038 g.cm3?b. 0.313 Mc. 0.500 Md. 0.625 Ma. 0.0301 M4. In a heating or cooling curve, what does it mean when the line stays flat for a whilebefore going up or down?5. Consider a solution composed of toluene (C7He) and benzene (C6H6) with volumes50 mL and 125 mL, respectively. The densities of the compositions are 0.867 g/cm3and 0.874 g/cm³, respectively. Find the molarity with respect to toluene.

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Answered: 1. Solutions of known % (v/v) is…

1. Solutions of known % (v/v) is prepared by the use of . a. balance b. volumetric flask c. graduated cylinder d. both b and c

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter4: Calculations Used In Analytical Chemistry

Section: Chapter Questions

Problem 4.23QAP

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Question

Choose the correct answer ans write your solution.

1. Solutions of known % (v/v) is prepared by the use of ...
a. balance b. volumetric flask c. graduated cylinder
d. both b and c
2. A brine solution is 13.0 % (w/w). How much salt is there in a sample which weighs
150 grams?
а. 1.2 g
b. 19.5 g
c. 30.0 g
d. 7.5 g
3. What is the molarity of KI in a solution that is 5.00% KI by mass and has a density
of 1.038 g.cm3?
b. 0.313 M
c. 0.500 M
d. 0.625 M
a. 0.0301 M
4. In a heating or cooling curve, what does it mean when the line stays flat for a while
before going up or down?
5. Consider a solution composed of toluene (C7He) and benzene (C6H6) with volumes
50 mL and 125 mL, respectively. The densities of the compositions are 0.867 g/cm3
and 0.874 g/cm³, respectively. Find the molarity with respect to toluene.

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