In this exercise, we will investigate the chemical potential μ upon a change in volume. we will use the fact that f=u−ts and μ=∂f∂n. we will compute μ(vf)−μ(vi) in all questions, take n=20 moles (which is 20 times avagodro's number of particles), t=300 k, vi=0.01 m3,vf=0.02 m3 1) for a gas with an excluded volume: u=32nkt+const s=nkln(v−bn)+const if b=10-28 m3, compute μ(vf)−μ(vi)