Section outline

  • This figure shows a swimming pool that is full of water and surrounded by a concrete patio.

    Figure 6.1 The water in a swimming pool is a complex mixture of substances whose relative amounts must be carefully maintained to ensure the health and comfort of people using the pool. (credit: modification of work by Vic Brincat) By: Rice University Openstax CC BY NC SA

    Chapter Outline
    • Formula Mass
    • Determining Empirical and Molecular Formulas
    • Molarity
    • Other Units for Solution Concentrations


    Upon completion of this module, you will be able to:


    Formula Mass (6.1)

    1. Calculate formula masses for covalent and ionic compounds (CLO2)


    Determining Molecular and Empirical Formulas (6.2)

    1. Write molecular and empirical formulas (CLO1)(CLO2)


    Molarity (6.3)

    1. Describe the fundamental properties of solutions (CLO1)
    2. Calculate solution concentrations using molarity (CLO2)
    3. Perform dilution calculations using the dilution equation (CLO2)


    Other Units for Solutions Concentrations (6.4)

    1. Define the concentration units of mass percentage, volume percentage, mass-volume percentage, parts-per- million (ppm), and parts-per-billion (ppb) (CLO1)
    2. Perform computations relating a solution’s concentration and its components’ volumes and/or masses using these units (CLO2)


    To achieve these objectives:

    1. Read and view the Module 6: Chapter 6: Composition of Substances and Solutions in Moodle
    2. Read Chapter 6: Composition of Substances and Solutions in the OpenStax Chemistry: Atoms First 2e Pressbook
    3. Complete the Module 6: Chapter 6: Composition of Substances and Solutions Assignment
    4. Complete the Module 6: Chapter 6: Composition of Substances and Solutions Discussion
    5. Complete the Module 6: Lab 6: Video (VWS) Assignment - Molarity
    6. Complete the Module 6: Lab 6: Experiment- Concentration and Molarity
    7. Complete the Module 6: Lab 6: Report Assignment - Concentration and Molarity
    Note the checkboxes to the right that help you track your progress: some are automatic, and some are manual. 


    Module Pressbooks Resources and Activities

    You will find the following resources and activities in this module at the Pressbooks website. Click on the links below to access or complete each item.

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