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 * Ideal Gas Law**

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The ideal gas law combines all the gas laws into one equation. This law is the mathematical relationship among pressure, volume, temperature, and number of moles of a gas.it is the equation of state for an ideal gas. This law can be represented by the equation PV=nRT. P represents the pressure, V represents the volume, n represents the number of moles, R is a constant known as the ideal gas constant, represented by .082058, but is rounded up to .0821, and T represents the temperature in kelvin.

What is the pressure is atmospheres exerted by a .5 mol sample of nitrogen gas in a 10 L container at 298ºK
 * Example Problem:**

__Step One:__ Given: V of N2 = 10.0L ; n of N2 = 0.500 mol ; T of N2 = 298K Looking For: P of N2 in atm

__Step Two:__ The gas sample undergoes no change in conditions. The ideal gas law can be rearanged to find the pressure: P = (n)(R)(T) / V

__Step Three:__ Substitute the given values into the equation: P = (0.500 mol) [(0.0821 L x atm) / (mol x K)] (298K) / 10L = 1.22atm

All units cancel correctly to give the result in atmospheres. The answer is limited to three significant figures. It is also close to an estimated value of 1.5
 * Conclusion:**

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