The figure below shows Pb-Sn phase diagram. What is the composition of Pb and Sn at point 1? 1200 1000 Liquid 779 C (Tg). B+L 800 G 91.2 8.0 71.9 600 400 IC H. 200 20 40 60 80 100 (Pb) Composition (wt% Sn) (Sn) Callister Jr., W.D., 2007 O a. 80 wt % Sn and 20 wt % Pb O b. 10 wt % Sn and 90 wt % Pb O c. 90 wt % Sn and 10 wt % Pb O d. 20 wt % Sn and 80 wt % Pb Temperature ("C)
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