3) a) Calculate energy change, AG", the size of the critical nucleus, r and the number of atoms in thecritical nucleus when solid copper forms by homogeneous nucleation.Given : T= 1358 K, AT 0.2Tm AHI = 1628 Joules/cm' = 1628 x 10' ergs/cm', y= 177 ergs/cmThe lattice parameter of face-centered cubic copper, Cu is a, = 0.3615 nm = 0.3615 x 10° m.b) Calculate the number of copper atoms that must come together to produce a heterogeneous%3!nucleus of a spherical cap of a volume:Ve- Th'/3 x (3r – h) where h = 0.2r

Tm = 1358K ∆T = 0.2Tm ∆Hf = 1628J/cm3 = 1628×107erg/cm3y = 177ergs/3ao = 0.36@5nm = 0.3615×10-9m

3) a) Calculate energy change, AG", the size of the critical nucleus, r" and the number of atoms in the critical nucleus when solid copper forms by homogeneous nucleation. Given: T=1358 K, AT=0.2T AHf=1628 Joules/cm³= 1628 x 10' ergs/cm³, y = 177 ergs/cm² The lattice parameter of face-centered cubic copper, Cu is a, = 0.3615 nm = 0.3615 x 10 m. b) Calculate the number of copper atoms that must come together to produce a heterogeneous nucleus of a spherical cap of a volume: Vomh²/3 x (3r-h) where h = 0.2r

3) a) Calculate energy change, AG", the size of the critical nucleus, r" and the number of atoms in the critical nucleus when solid copper forms by homogeneous nucleation. Given: T=1358 K, AT=0.2T AHf=1628 Joules/cm³= 1628 x 10' ergs/cm³, y = 177 ergs/cm² The lattice parameter of face-centered cubic copper, Cu is a, = 0.3615 nm = 0.3615 x 10 m. b) Calculate the number of copper atoms that must come together to produce a heterogeneous nucleus of a spherical cap of a volume: Vomh²/3 x (3r-h) where h = 0.2r

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter22: Inorganic Materials

Section: Chapter Questions

Problem 44AP

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