A cube of gold that is 1.00 cm on a side has a mass of 19.3 g.A single gold atom has a mass of 197.0 amu. (a) How manygold atoms are in the cube? (b) From the information given,estimate the diameter in Å of a single gold atom. (c) What assumptionsdid you make in arriving at your answer for part (b)?

Q: An atom of calcium is represented by 12C.. How many neutrons are in the nucleus of this atom?…

A:

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A:

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A: a)

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Q: the number of copper atoms in a 3.0g lump of copper is 2.8x1022. how many electrons are present  in…

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A: The question is based on mole concept. We have to determine mass of aluminium present.

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A: Answer

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Q: What mass of nickel would contain 5.66 x 1021 atoms?

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A:

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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.