# Calculate the mass of metal that can be obtained from 80g of iron oxide (3)?

July 29, 2021 | education

| Let’s execute the solution:

1. We write down the equation:

Fe2O3 + 3H2 = 2Fe + 3H2O – OBP, iron was obtained by the method of hydrogen heat;

2. Let’s make the calculations:

M (Fe2O3) = 159.6 g / mol.

M (Fe) = 55.8 g / mol.

3. Determine Y (mol) of the starting material:

Y (Fe2O3) = m / M = 80/159, 6 = 0.5 mol.

4. Proportion:

0.5 mol (Fe2O3) – X mol (Fe);

-1 mol – 2 mol from here, X mol (Fe) = 0.5 * 2/1 = 1 mol.

5. Find the mass of the product:

m (Fe) = Y * M = 1 * 55.8 = 55.8 g.

Answer: Iron was obtained with a mass of 55.8 g.

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