Question

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Answer 1

Answer:

Molar mass of oxygen is 32 gram per mol and it will be used to convert its grams to moles. So, 59.6 grams of Iron are needed to combine with 25.6 grams of oxygen.

Answer 2

Answer:

Molar mass of oxygen is 32 gram per mol and it will be used to convert its grams to moles. So, 59.6 grams of Iron are needed to combine with 25.6 grams of oxygen.

Explanation:

The reaction is . . . . 4Fe + 3O2 ==> 2Fe2O3

25.6 g O2 x (1 mole O2 / 32.0 g O2) = 0.800 moles O2

The balanced equation tells us that it takes 4 moles of Fe to react with 3 moles of O2.

0.800 moles O2 x (4 moles Fe / 3 moles O2) = 1.07 moles Fe

1.07 moles Fe x (55.9 g Fe / 1 mole Fe) = 59.8 g Fe

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