1. The problem statement, all variables and given/known data Using the equation P=m/V show that the equation PV=nRT can become P/p=(R/MW)T P=pressure p=density of air n=number of moles of gas R=gas constant T=temperature m=mass V=volume MW=mass of one mole of air 2. Relevant equations P=m/V PV=nRT P/p=(R/MW)T 3. The attempt at a solution I was reading that n=m/MW, is that right? And where I'm stuck at is properly matching each letter from the first equation with the second one and how that can translate to the final equation.