The density of iron is 7.87 g/cm³, and the average mass for one iron atom is 9.28×10-² -23 9. Six identical iron coins are found to displace a total of 1.80 mL of water when immersed in a graduated cylinder containing water. How many atoms are present in one such iron coin?

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Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.