Solution-Determine its density upon heating

Determine its density upon heating

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Reference no: EM131086111

When a metal is heated its density decreases. There are two sources that give rise to this diminishment of ρ: (1) the thermal expansion of the solid, and (2) the formation of vacancies. Consider a specimen of gold at room temperature (20?C) that has a density of 19.320 g/cm3.

(a) Determine its density upon heating to 800^oC when only thermal expansion is considered.

(b) Repeat the calculation when the introduction of vacancies is taken into account. Assume that the energy of vacancy formation is 0.98 eV/atom, and that the volume coefficient of thermal expansion, αv is equal to 3αl.

Reference no: EM131086111

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Determine its density upon heating

Reference no: EM131086111

Reference no: EM131086111

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