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Gold is one of the most malleable and ductile metals. If the density of gold
is 19.32 g/cm3, when a mass of 1 g of gold is withdrawn to make a paper
with a thickness of 1 micrometer, the area of the gold leaf is.
519 cm*2
7150 cm^2
13900 cm^2
19320 cm^2
52164 cm^2
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