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How many moles of oxygen atoms are in 100.0 g of P2O5?
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3 votes
How many moles of oxygen atoms are in 100.0 g of P2O5?

User Schien
by
6.4k points

1 Answer

3 votes

Molar mass of P2O5

  • 2(31)+5(16)
  • 62+80
  • 142g/mol

Now

no of moles

  • Given mass /molar mass
  • 100/142
  • 0.7mol

1 mol P2O5 contain 5 moles O2

0.7mol P2O5 contains 5×0.7=0.35mol O2

User Felipe Centeno
by
6.7k points
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