Into the same funnel is poured carefully 50 mL of hexane (density = 0.660 g/ml) so that

Question:

Into the same funnel is poured carefully 50 mL of hexane (density = 0.660 g/ml) so that the other two layers are not disturbed. The hexane forms a third layer. The funnel is stoppered and the mixture is shaken vigorously. After standing, two layers separate. Which compound(s) are in which layer? Explain.