An ingot of germanium is formed by melting together 1 kg of germanium and 118 g...

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An ingot of germanium is formed by melting together 1 kg of germanium and 118 g of arsenic. (i) Assuming that the arsenic is uniformly distributed, calculate the number of arsenic atoms per unit of volume in the ingot. [You may use values for density of germanium: 5.46 g/cm, arsenic molar mass: 74.922 g/mol.] (ii) Assuming that the excess electrons due to the arsenic atoms are fully ionized at room temperature and that their mobility is 2,414 cm/V.s, calculate the conductivity (in S/cm) of the ingot. (iii)What resistance would you expect to measure for a bar of this material having a contact on either end and measuring 20 1 1 mm? An ingot of germanium is formed by melting together 1 kg of germanium and 118 g of arsenic. (i) Assuming that the arsenic is uniformly distributed, calculate the number of arsenic atoms per unit of volume in the ingot. [You may use values for density of germanium: 5.46 g/cm, arsenic molar mass: 74.922 g/mol.] (ii) Assuming that the excess electrons due to the arsenic atoms are fully ionized at room temperature and that their mobility is 2,414 cm/V.s, calculate the conductivity (in S/cm) of the ingot. (iii)What resistance would you expect to measure for a bar of this material having a contact on either end and measuring 20 1 1 mm?

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i To find the number of arsenic atoms per unit of volume in the ingot we need to first calculate the volume of the ingot since the arsenic is uniforml... View the full answer