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What fraction of the surface of a crysta...

What fraction of the surface of a crystal of `Cd` at `T = 298 K` consists of vacancies? Assume that the energy needed to form a vacancy `= 0.5 Delta_("sub")H^(Θ)`. For `Cd(s), Delta_("sub")H^(Θ) = 112.0 kJ mol^(-1)`.

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To find the fraction of the surface of a crystal of cadmium (Cd) that consists of vacancies at a temperature of 298 K, we can follow these steps: ### Step 1: Gather Given Data - Temperature (T) = 298 K - Enthalpy of sublimation (ΔH_sub) = 112.0 kJ/mol - Energy needed to form a vacancy (E) = 0.5 * ΔH_sub ### Step 2: Convert ΔH_sub to Joules ...
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