Chapter 8, Problem 23 If 500 g of a 40 wt % Ag–60 wt % Cu alloy is slowly cooled from 1000°C to just below 780°C (see Fig. 8.22): (a) How many grams of liquid and proeutectic alpha are present at 850°C? (b) How many grams of liquid and proeutectic alpha are present at 780°C + T ? (c) How many grams of alpha are present in the eutectic structure at 780°C - T ? (d) How many grams of beta are present in the eutectic structure at 780°C - T ?