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Calculate the number of particles of 285 grams of iron (III) oxide.
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Calculate the number of particles of 285 grams of iron (III) oxide.

User Allister
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Using Avogadro's Number and stoichiometry:

285 g Fe2O3 x (1 mol Fe2O3/159.7 g Fe2O3) x (6.022x10^23 particles/1 mole) = 1.07x10^24 particles of Fe2O3
User Gleichmut
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