Each of four identical tires of a car is filled with a different gas. Gas pressure in each tire is 3.0 atm at 25oC. One tire contains neon, another – argon, the 3rd one has krypton, and the last one has unknown gas. How many molecules are there in each tire?
So far, I have used PV=nRT. I set V=1. I found that n = .1226 moles. I multiplied that by avogadros number and got
7.38 * 10 ^ 22 molecules. Is this correct?
2 answers
How do you know V = 1? If you set V = 2 (or 3, or 4 or 5) will that change the number of molecules.
n = PV/RT
You do not know the volumes of the tires except that they are all the same. "V = 1" (an arbitrary unit of volume) cannot give you a specific number of moles or number of molecules. However how do the numbers of molecules for each gas compare to each other?
You do not know the volumes of the tires except that they are all the same. "V = 1" (an arbitrary unit of volume) cannot give you a specific number of moles or number of molecules. However how do the numbers of molecules for each gas compare to each other?
1 answer