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11-05-2020
Chemistry

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How many moles of O2 are required to react completely with 1.396 g of Fe?

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11-05-2020

Answer:

moles O₂ needed = 0.19 mole

Explanation:

4Fe(s) + 3O₂(g) => 2Fe₂O₃(s)

1.396g Fe(s) = 1.396g/56g/mol = 0.025 mole Fe(s)

0.025 mole Fe(s) reacts with 3/4(0.025 mole O₂(g) = 0.019 mole O₂(g)

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