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How many atoms are in 169 g of calcium?

Answer :

First calculate the number of moles. Molar mass of Calcium
= 40.08 g/mol





Number of moles = 169 g / (40.08 g / mol) = 4.217 moles





Using Avogadros number, we can get the number of atoms:



Number of atoms = 4.217 moles * (6.022 x 10^23 atoms /
moles) = 2.54 x 10^24 atoms

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