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Chem 132: Calculate the number of atoms in 4.77 g of lead.

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Question:

Calculate the number of atoms in 4.77 g of lead. Provide your answer using the correct amount of significant figures.
a.   7.22 x 10^-23 atoms of lead
b.  1.39 x 10^22 atoms of lead.
c.   1.386 x 10^22 atoms of lead.
d.  2.61 x 10^25 atoms of lead.
e.  2.615 x 10^25 atoms of lead.

Answer

b. 1.39 x 10^22 atoms of lead

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