Question

ideal gas law PV=nRT what physical quantity is represented on each side of the equation?

Answer 1

P = Pressure in pascal
V= Volume in cubic meters
n= no. of moles
R= Universal gas constant
T= temperature in Kelvin

Answer 2

This is a perfect example of the advantage of dimensional analysis... its a statement about energy:
\[P = \frac{Force}{Area} = \frac{Force}{Length^{2}} \ \ \ \& \ \ \ V=Length^{3}\]
So:
\[PV = \frac{Force}{Length^{2}}*Length^{3}=Force*Length=Energy\]
The same goes for the other side of the equation:
R is the universal gas constant that has units of Energy per (Temperature*mole)... so multiplied by the number of moles and the Temperature gives you energy