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Gold, which has a density of 19.32 g/cm³, is the most ductile metal and can be pressed into a thin leaf or drawn out into a long fiber. (a)
If a sample of gold with a mass of 5.013 g, is pressed into a leaf of 8.428 μm thickness, what is the area of the leaf? (b) If, instead, the
gold is drawn out into a cylindrical fiber of radius 2.600 µm, what is the length of the fiber?

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