AlysaSessa772 AlysaSessa772

08-06-2015
Chemistry

Answered

How many total atoms are in 0.380 g of P2O5

Answer :

lulu1991 lulu1991

08-06-2015

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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