Question

Give the mass in grams of diphosphorus pentoxide that contains 2.0 x 10^(24) oxygen atoms.
P2O5
2E24/6.022E23 = moles O atoms.
moles O atoms/5 = moles P2O5 molecules.
moles P2O5 = grams P2O5/molar mass P2O5. Solve for grams P2O5.

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