(Solved): 1. Determine the phases present, the compositions of each phase, and the amount of each phase in mo ...

1. Determine the phases present, the compositions of each phase, and the amount of each phase in $$\mathrm{mol}\%$$ for the following NiO-MgO ceramics at $$2400^{?}\mathrm{C}$$ : (a) $$\mathrm{NiO}?30\mathrm{mol}\%\mathrm{MgO}$$; (b) NiO-45 mol\% MgO; (c) $$\mathrm{NiO}?60\mathrm{mol}\%\mathrm{MgO}$$; (d) NiO-85 mol\% MgO. 2. Determine the phases present, the compositions of each phase, and the amount of each phase in wt\% for the following MgO-FeO ceramics at $$2000^{?}\mathrm{C}$$ : (i) $$\mathrm{MgO}?25\mathrm{wt}\%\mathrm{FeO}$$;