5.Germanium forms a substitutional solid solution with silicon. Compute the number of germanium atoms per cubic centimeter for a germanium-silicon alloy that contains 15 wt% Ge and 85 wt% Si. The densities of pure germanium and silicon are 5.32 and 2.33 g/cm3, respectively. Atomic weight of Ge is 72.64 g/mol

There are of Germanium in a germanium-silicon alloy that contains 15 wt% Ge and 85 wt% Si.

Explanation:

The masses of silicon and germanium contained in a cubic centimeter of the germanium-silicon alloy by apply the concepts of mass (), density () and volume (), as well as the mass-mass proportion of Germanium ():

The amount of moles of Germanium is obtained after dividing previous outcome by its atomic weight. That is to say:

There are 0.011 moles in a cubic centimeter of the germanium-silicon alloy. According to the Law of Avogadro, there are in a mole of Germanium. The quantity of atoms in a cubic centimeter is therefore found by simple rule of three:

There are of Germanium in a germanium-silicon alloy that contains 15 wt% Ge and 85 wt% Si.

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