If 300.0 grams of FeCr2O7 react, how many grams of O2 will be consumed

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Chemistry

Zackery

8 September, 06:03

If 300.0 grams of FeCr2O7 react, how many grams of O2 will be consumed

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Damion Mckinney · Answer 1

You are given 300 grams of FeCr2O7. You are required to get the mass of O2 in grams. The first thing to do is to find a reaction between FeCr2O7 and O2. The balanced chemical reaction is 2Fe + 6Cr + 21/2O2 - > Fe2 (Cr2O7) 3. The molar mass of Fe2 (Cr2O7) 3 is 759.65 grams per mole and 32 grams per mole for O2.

300g Fe2 (Cr2O7) 3 (1 mol Fe2 (Cr2O7) 3/759.65 g Fe2 (Cr2O7) 3) (21/2 mol O2/1 mole Fe2 (Cr2O7) 3) (32 g O2/1 mole O2) = 132.7 g O2