Cite the phases that are present and the phase compositions for the following alloys (a) 90 wt Zn 10 wt Cu at 400(C (750(F) (b) 75 wt Sn 25 wt Pb at 175(C (345(F) (c) 55 wt Ag 45 wt Cu at 900(C (1650(F) (d) 30 wt Pb 70 wt Mg at 425(C (795(F) (e) 2 12 kg Zn and 1 88 kg Cu at 500(C (930(F) (f) 37 lbm Pb and 6 5 lbm Mg at 400(C (750(F) (g) 8 2 mol Ni and 4 3 mol Cu at 1250(C (2280(F) (h) 4 5 mol Sn and 0 45 mol Pb at 200(C (390(F)

Question: Cite the phases that are present and the phase compositions for the following alloys: (a) 90 wt% Zn-10 wt% Cu at 400(C (750(F) (b) 75

Cite the phases that are present and the phase compositions for the following alloys:

(a) 90 wt% Zn-10 wt% Cu at 400(C (750(F)

(b) 75 wt% Sn-25 wt% Pb at 175(C (345(F)

(d) 30 wt% Pb-70 wt% Mg at 425(C (795(F)

(e) 2.12 kg Zn and 1.88 kg Cu at 500(C (930(F)

(f) 37 lbm Pb and 6.5 lbm Mg at 400(C (750(F)

(g) 8.2 mol Ni and 4.3 mol Cu at 1250(C (2280(F)

(h) 4.5 mol Sn and 0.45 mol Pb at 200(C (390(F)

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