4. Calculate the mass of 12.046 x 10^23 molecules in Cao.
5. Calculate the number of moles in 24.092 x 10^22 molecules of water
6. Calculate the number of moles in a) 12.046 x 10^23 atoms of copper b) 27.95g of iron c) 1.51×10^23molecules of co2
Guys plz solve this question by using formula
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