Question

Iron forms rust, expressed as: Fe2O3. Using information from the Periodic Table, what is the mass of one mole of Fe2O3?

A.


71.85 g


B.


143.70 g


C.


159.70 g


D.


319.40 g

Answer 1

The answer is C, 159.70g

Answer 2

The correct answer is option C.

Step-by-step explanation:

Atomic mass of iron = 55.845 g/mol

Atomic mass of oxygen = 15.999 g/mol

Mass of 1 mole of iron(III) oxide ,
`Fe_2O_3`:

`2* 55.845 g/mol+3* 15.999 g/mol=159.687 g/mol`

159.687 g/mol ≈ 159.70 g/mol

159.70 g/mol is the mass of one mole of iron(III) oxide.