Pls help its rlly hard

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)

Why doesn't heat added to water make the tempature rise above 100c

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory