How many atoms are present in 354.22 g of cl2
a) 3.0076 x 1024 atoms
b) 4.9958 atoms
c) 6.0152 x 1024 atoms
d) 1.5119 x 1028 atoms

a) 3.0076 E24 atoms

Explanation:

∴ mass Cl2 = 354.22 g

∴ molar mass Cl2 = 70.906 g/mol

⇒ mol Cl2 = (354.22 g)*(mol/70.906 g) = 4.9956 mol

⇒ atoms Cl2 = (4.9956 mol)*(6.022 E23 atoms/mol)

⇒ atoms Cl2 = 3.008 E24 atoms

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