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Author:
carolyn fruin

Using the information about gas laws, stoichiometry and molar volume, students will calculate the values of different variables depending on given information. The relationships between the number of moles, volume, pressure and temperature must be understood to solve complex numeric gas problems.

**Learning Targets:**

- I can define the universal gas constant, R.
- I can calculate the density or molar mass using dimensional analysis and the universal gas constant, R.
- I can describe effusion and diffusion.
- I can compare the velocity of different gases using Graham's Law.
- I can determine the various pressures of gases in a mixture using Dalton's Law of Partial Pressures.

Tutorial

The following simulation illustrates the ideal gas law as discussed in class.

Click on the following:

Can you verbally explain what you are seeing in terms of the relationships between, volume, temperture, number of particles and pressure?

Source: http://www.chem.iastate.edu/

This video describes the idea of partial pressure of gases in a mixture and how to use Dalton's Law to calculate values.

Source: KhanAcademy