# What is n in the equation of the ideal gas law?

##### 1 Answer

Oct 18, 2014

The calculations for the ideal gas law are comparison of the Pressure and Volume of gas based upon amount and temperature.

The basic formula is PV = nRT where

P = Pressure in atmospheres (atm)

V = Volume in Liters (L)

n = # of moles (mol)

R = the Ideal Gas Law Constant

T = Temperature in Kelvin (K)

The value n is the amount of the gas measured as moles.

One may need to convert a mass to moles by dividing the given mass of the gas by the molar mass of the gas to get moles.

The ideal gas law constant is a combination of these values based upon the volume of one mole of a gas at Standard Temperature and Pressure (STP).