# Physics

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We want to ﬁnd how much charge is on the
electrons in a nickel coin. Follow this method.
A nickel coin has a mass of about 4.9 g.
Find the number of atoms in a nickel coin.
Each mole (6.02 × 10
23
atoms) has a mass of

Find the number of electrons in the coin. Each
nickel atom has 28 electrons/atom.

Find the magnitude of the charge of all these
electrons.

• Physics -

What is your question on this? Surely you do not want me to answer it.

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