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Molality Teacher Resources
Find teacher approved Molality educational resource ideas and activities
Molality is a unit of concentration used when working with chemical solutions. An introduction is given in which conversion factors are concretely explained. Six problems are provided for individuals to practice using the conversion factors. The answers are provided at the bottom of the learning exercise, therefore it is not recommended for use as an assessment, but rather as a homework or in-class assignment.
In this molal boiling point activity, students complete a virtual lab experiment to determine the molal boiling point constant of water. Students use a calorimeter to measure the boiling point of water at the current atmospheric pressure and then they measure the boiling point of a salt solution. Students use their data to find the molal boiling point constant for water.
Students complete a virtual chemistry lab to determine the freezing point constant for water. In this molality chemistry lab, students use Virtual ChemLab to complete a virtual experiment. They gather data and use it to calculate the molality of a sodium chloride solution and the molal freezing point constant of water.
The textbook reference is not mentioned, but this set of chemistry problems can be assigned as practice no matter which text you use. Scholars solve for the boiling point, freezing point, molality, and energy released by different solutions. They also write net ionic equations for several chemical reactions. There are 11 questions in all.