A thin, semitransparent film of gold ( = 19 300 kg/m 3 ) has an area of
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A thin, semitransparent film of gold (ρ = 19 300 kg/m3) has an area of 14.5 cm2 and a mass of 1.93 mg.
(a) What is the volume of 1.93 mg of gold?
(b) What is the thickness of the film in angstroms, where 1 Å = 10-10m?
(c) Gold atoms have a diameter of about 5 Å. How many atoms thick is the film?
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