What is an example of an Ideal gas law practice problem?

The Ideal Gas Law is a comparison of the the Pressure, Volume and Temperature of a Gas based upon the amount either by mole value or density.

There are two basic formulas for the Ideal Gas Law

#PV = nRT# and #PM = dRT#

P = Pressure in Atmospheres
V = Volume in Liters
n = Moles of the Gas Present
R = The Ideal Gas Law Constant #0.0821 (atmL)/(molK)#
T = Temperature in Kelvin
M = Molar Mass of the Gas in #(grams)/(mol)#
d = Density of the Gas in #g/L#

If we were given a 2.5 mole sample of #H_2# gas at 30 C in a 5.0 L container, we could use the ideal gas law to find the pressure.

P = ??? atm
V = 5.0 L
n = 2.5 moles
R = #0.0821 (atmL)/(molK)#
T = 30 C + 273 = 303 K

#PV = nRT# can be rearranged algebraically to #P = (nRT)/v#

#P = ((2.5 mol)(0.0821 (atmL)/(molK))(303K))/(5.0 L)#

#P = 12.4 atm#

I HOPE THIS WAS HELPFUL.
SMARTERTEACHER