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Your answer is partially correct. Try again. A lead-tin alloy of composition 50

ID: 703612 • Letter: Y

Question

Your answer is partially correct. Try again. A lead-tin alloy of composition 50 wt% Sn-50 wt% Pb (Animated Figure2.8) is slowly heated from a temperature of 150°C (300°F). a) At what temperature does the first liquid phase form? oc The absolute tolerance is t- 2] 183 (b) What is the composition of this liquid phase? 61.9 wt% Sn [The absolute tolerance is +/-0.3.] (c) At what temperature does complete melting of the alloy occur? 260 oC [The absolute tolerance is +/- 3.] (d) What is the composition of the last solid remaining prior to complete melting? 13 wt% Sn [The tolerance is +/-396.]

Explanation / Answer

Solution:

3) 232 deg cels So as you move horizontally at 183 deg cels and heat to reach 232 deg cels.

4) 97.8 percent Sn the composition at 232 deg cels