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How many total atoms are in 0.420g of P2O5

User Dosytres
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the total number of atoms is obtained by converting the given mass to its respective molar mass of the compound. Then we multiply the number of moles to Avogadro;s number equal to 6.033x10^23 atoms. THe answer is 5.1158 x10^20 atoms. 
User Nevilad
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