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Estimate the number of gold atoms in a gold coin with a diameter of 1 cm and a thickness of 1mm?
Wiki User
∙ 9y ago
A gold coin with a diameter of 1 centimeter and a 1 mm thickness has a volume of .07854 cubic centimeters. Gold has a density of 19.30 grams per cubic centimeter. There is 1.5158 grams of gold or 7.7 millimoles or 4.637 E21 atoms.
Wiki User
∙ 9y ago
Haris Haris Khalid
A gold coin with a diameter of 1 centimeter and a 1 mm thickness has a volume of .07854 cubic centimeters. Gold has a density of 19.30 grams per cubic centimeter. There is 1.5158 grams of gold or 7.7 millimoles or 4.637 E21 atoms.
Wiki User
∙ 14y agoWork out the volume of the coin first. Then using density formula, mass of this coin can be calculated. From mass find the number of moles. Then Avogadro's number will take care of the rest.
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