The equilibrium fraction of lattice sites that are vacant in silver (Ag) at 700°C is 2 × 10-6. Calculate the number of vacancies (per meter cubed) at 700°C. Assume a density of 10.35 g/cm3 for Ag, and note that AAg = 107.87 g/mol.

Explanation:

Data given

temperature =700c

Density=10.35g/cm^3

but

Nv is the number of vacant site and N is the number of lattice site.

Since the number of lattice site can also b computed as

if we substitute the value of the number of lattice into the first equation, we arrive at

answer:

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explanation: