Concept explainers
(a)
Interpretation: The mass fraction and weight percent of
Concept introduction:
Mass fraction: The mass of a single solute divided by the total mass of all solutes and solvent in the solution.
Weight percent: The mass of one component divided by the total mass of the mixture, multiplied by
(a)
Answer to Problem 59QRT
The mass fraction of
Explanation of Solution
- The Mass fraction:
Given information as: Mass of
Mass fraction of
Hence, the mass fraction of
- The Weight percent:
Given information as: Mass of
The weight percent of
(b)
Interpretation: The mass fraction and weight percent of ethanol has to be calculated.
Concept introduction:
Refer to (a)
(b)
Answer to Problem 59QRT
The mass fraction of ethanol is
Explanation of Solution
- The Mass fraction:
Given information as: Mass of ethanol is
Mass fraction of ethanol
Hence, the mass fraction of
- The Weight percent:
Given information as: Mass of ethanol is
The weight percent of ethanol is calculated as shown above. Hence, the weight percent obtained is
(c)
Interpretation: The mass fraction and weight percent of methanol has to be calculated.
Concept introduction:
Refer to (a)
(c)
Answer to Problem 59QRT
The mass fraction of methanol is
Explanation of Solution
- The Mass fraction:
Given information as: Mass of methanol is
Mass fraction of methanol
Hence, the mass fraction of methanol is
- The Weight percent:
Given information as: Mass of methanol is
The weight percent of methanol is calculated as shown above. Hence, the weight percent obtained is
(d)
Interpretation: The mass fraction and weight percent of ethylene glycol has to be calculated.
Concept introduction:
Refer to (a)
(d)
Answer to Problem 59QRT
The mass fraction of ethylene glycol is
Explanation of Solution
- The Mass fraction:
Given information as: Density of ethylene glycol is
Mass of ethylene glycol:
Mass fraction of ethylene glycol
Hence, the mass fraction of ethylene glycol is
- The Weight percent:
The weight percent of ethylene glycol is calculated as shown above. Hence, the weight percent obtained is
Want to see more full solutions like this?
Chapter 13 Solutions
Chemistry: The Molecular Science, Hybrid Edition (with OWLv2 24-Months Printed Access Card)
- Calcium chloride, CaCl2, has been used to melt ice from roadways. Given that the saturated solution is 32% CaCl2 by mass, estimate the freezing point.arrow_forwardA solution is made by dissolving 0.455 g of PbBr2 in 100 g of H2O at 50C. Based on the data in Table 8-1, should this solution be characterized as a. saturated or unsaturated b. dilute or concentratedarrow_forwardInsulin is a hormone responsible for the regulation of glucose levels in the blood. An aqueous solution of insulin has an osmotic pressure of 2.5 mm Hg at 25C. It is prepared by dissolving 0.100 g of insulin in enough water to make 125 mL of solution. What is the molar mass of insulin?arrow_forward
- The dispersed phase of a certain colloidal dispersion consists of spheres of diameter 1.0 102 nm. (a) What are the volume (V=43r2) and surface area (A = r2) of each sphere? (b) How many spheres are required to give a total volume of 1.0 cm3? What is the total surface area of these spheres in square meters?arrow_forwardWhat is the freezing point and normal boiling point of a solution made by adding 39 mL of acetone, C3H6O, to 225 mL of water? The densities of acetone and water are 0.790 g/cm3 and 1.00 g/cm3, respectively.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning
- Chemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage LearningChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningChemistry & Chemical ReactivityChemistryISBN:9781337399074Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage Learning