Suppose that the attractions are the dominant interactions between gas molecules, and the equation of state is p = nRT/v -n2a/v2. Derive an expression for the work of reversible, isothermal compression of such a gas. Compared with a perfect gas, is more or less work done on the surroundings when compression?

number of molecules =9.03×10^23

Explanation:

use the equation

n=number of molecules /Av.constant

make number of Molecules become the subject of the formula by multplying Av.constant on both sides of the equation,

number of molecules=n×Av. constant ,where Av.constant is 6.02×10^23

number of molecules=1.5mol×6.02×10^23

=9.03×10^23