During freezing of Cu-Zn alloy,we find that the composition is nonuniform.By heating the alloy to 600℃ for 3 h,diffusion of zinc helps to make the composition more uniform.What temperature would be required if we wished to perform this homogenization treatment in 30 minutes.

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Q: If the ∆Hsoln = 50 kJ/mol and the ∆Hlattice = 150kJ/mol, the ∆Hhydr for the ions in the substance…

A: ∆Hsolution = 50 KJ/mol ∆Hlattice = 150 KJ/mol  ∆Hhydration = ?

Q: Derive the dimension ratio cla for regular HCP crystal. DO NOT USE the atomic packing factor.

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