A sticky substance that upon dissolving in water, is found to be a nonelectrolyte, has a concentration of 0.857 M. Convert the concentration to molality. The density of the solution is 1.355 g/mL. The molar mass of the compound is 139.9 g/mol. Report your answer to the thousandths place and do not include units.

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
icon
Related questions
Question

A sticky substance that upon dissolving in water, is found to be a nonelectrolyte, has a concentration of 0.857 M. Convert the concentration to molality. The density of the solution is 1.355 g/mL. The molar mass of the compound is 139.9 g/mol. Report your answer to the thousandths place and do not include units.

Expert Solution
Step 1

Molarity=Number of moles of solute/volume of soln in Lmolality=no. of moles of solute/mass of solvent in KgMolarity =0.857MMolar mass of compound =139.9g/molDensity of solution=1.355g/mlAssume the no. of moles=0.857molputting in molarity equation we getV=1L=1000mlmass of solute=no. of moles×molar mass=0.857×139.9=119.89g

Density=mass of solution/volume of solution1.355=m/1000mass of solution=1355gmass of solution=mass of solute+mass of solvent1355=119.89+mass of solventmass of solvent=1355-119.89=1235.11g=1.23kg

trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Solutions
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY