Question

What percent of iron (III) hydroxide, Fe(OH)3 , is oxygen?

Answer 1

Answer:

Element. Symbol Mass Percent

Iron Fe. 52.257%

Hydrogen H. 2.830%

Oxygen. O. 44.914

Explanation:

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Answer 2

Given: The given compound is $Fe(OH)_3$.

To find: We have to find the percentage of oxygen.

Solution:

The compound is $Fe(OH)_3$.

The atomic weight of Fe is 56.

The atomic weight of Oxygen is 16 and the atomic weight of H is 1.

Thus, the molecular weight of $Fe(OH)_3$ is as follows-

$56 + 3 \times 16 + 3 \times 1 \\ = 56 + 48 + 3 \\ = 107$

The amount of Fe present in $Fe(OH)_3$ is 56 grams.

Thus, the percentage of Fe will be-

$\frac{56}{107} \times 100 \\ = 52.33$

The percentage of oxygen in $Fe(OH)_3$ is 52.33%.