How many atoms are in 0.697 g of gallium?

moles = mass / molar mass

moles Ga = 0.697 g / 69.7 g/mol

= 0.0100 moles

1 mole atoms = 6.022x10^23 atoms

So atoms Ga = moles x 6.022x10^23 atoms/mol

= 0.0100 mol x 6.022x10^23

= 6.02x10^21 atoms Ga

Explanation:

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Explanation:

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