2. A thin cylindrical plate made of silver is approximately 0.02 inch thick (0.5
ID: 715993 • Letter: 2
Question
2. A thin cylindrical plate made of silver is approximately 0.02 inch thick (0.5 mm) and has a radius of 10mm. Assume that all unit cells of the silver plate are arranged so that a is perpendicular to the plate surface. The atomic radius of silver is 0.144 nm and the atomic weight for silver is 107.86 g/mol. (30 pts) (a) What is the crystal structure for silver? (b) Determine the lattice parameter for silver (c) Determine the total number of unit cells in the plate. (d) State the thickness of the plate in number of unit cells. (d) Confirm your result - do you get the correct density for Ag using your answer and the lattice for Ag?Explanation / Answer
(a) The structure of silver is FCC.
(b) lattice parameter(a)= 22r
a= 22×0.144
a= 0.407nm
(c)1 mole of silver= 6.022×1023 atoms
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