AlysaSessa772 AlysaSessa772
  • 08-06-2015
  • Chemistry
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How many total atoms are in 0.380 g of P2O5

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lulu1991
lulu1991 lulu1991
  • 09-06-2015
The gram formula mass of P2O5 is 31*2 + 16*5 =142. The mole number of P2O5 is 0.380/142=0.00268 mol. There is 7 atom in one P2O5 molecule. And there is 6.02 * 10^23 molecule per mol. So the answer is 1.13*10^22 atoms.
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