Part B: Computational Problems 1. For the binary Cu-Ni phase diagram, a) How many mixtures are present in this phase diagram? b) What is the composition of Ni in the a phase for the 35 wt% Ni alloy at 1250°C in [wt%]? c) What is the composition of Cu in the a phase for the 35 wt% Ni alloy at 1250°C in [wt%]? T(°C) L (liquid) 13000 O⭑...... 35 32 43 24 36 1200 L+a a (solid) d) What is the weight percentage of a phase for the 35 wt% Ni alloy at 1250°C in [%]? L+a 46 1100 20 36 30 35 40 C₁₂ 50 wt% Ni Cu-Ni System e) What is the weight percentage of the liquid phase for the 35 wt% Ni alloy at 1250°C in [%]?