hannahashton84 hannahashton84

13-11-2014
Chemistry

Answered

how many molecules are there in 79g of Fe2O3? how many atoms is thi

Verified Answer :

14-11-2014

Molar mass of iron(III) oxide is 160g/mol

160g ----------- of iron(III) oxide is ---------------- 6.0210²³molecules
79g ----------- of iron(III) oxide is ---------------- x

x = [6.0210²³79g]/160g ≈ 2.9710²³ molecules

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