Which list of atomic model descriptions represents the order of historical development from the earliest to most recent

Calculate the change in entropy if br2(l) is converted to br2(g). s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

If i add water to oil what will happen