Figure Q3 below shows the phase diagram for the Silver-Copper (Ag-Cu) alloy system. Assume an alloy composition of 25%wt Ag and answer the following questions: i. Upon cooling, at what temperature will the first solid phase appear? [2] ii. Identify the first solid phase that appears and state its composition (e.g. at the temperature where it initially appears)? [3] iii. At what temperature will the alloy completely solidify? [2] iv. When just completely solidified, sketch and describe the microstructure? [4] v. Using the lever rule, calculate the wt% of both and phases present at 600o C, assuming equilibrium cooling conditions.