The X-Y phase diagram is shown in the attached figure. The two metals X and Y are soluble in each other at all proportions both in the liquid state and in the solid state. Each of the ten points on the diagram (A, B, C, D, E, F, G, H, I, J, respectively) represents 1000 g of a certain composition at a certain temperature.
1. Calculate how many phases are present?
2. Identify the nature of each phase (e.g., liquid or solid solution)?
3. Determine the chemical composition of each phase in units of wt. %Y?
4. Calculate how many grams of each phase are present?