The ideal gas law has three applications.
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(1) The first of these is a straightforward use of, PV=nRT If you are given three of the four variables you
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(2) The second application is a modification of the ideal gas equation by using variables for amount other than moles — e.g. molar mass (MW), mass (m), and density (D). This equation can take the following form,
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(3) The third application is used when a gas sample undergoes a change from one set of conditions to a second set of conditions. In this circumstance the ideal gas law equation is converted to the following,
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