Question

A sample of ferric oxide $\mathbf{(}{\mathbf{Fe}}_{\mathbf{2}}{\mathbf{O}}_{\mathbf{3}}$, density 5.24g/mL) obtained from ignition of a gravimetric precipitate weighed 0.2961gin the atmosphere. What is the true mass in vacuum?

Short answer

The true mass of Ferric oxide in a vacuum is 0.2963g.

Step-by-step solution

The given data;

The density of ${\mathrm{Fe}}_2{\mathrm{O}}_3$is 5.24g/mL.

The mass of${\mathrm{Fe}}_2{\mathrm{O}}_3$ is 0.2961g.

Ferric oxide.

Iron oxides or ferric oxides are iron and oxygen-based chemical compounds. It has iron in +3 oxidation state.

The molecular formula is ${\mathrm{Fe}}_2{\mathrm{O}}_3$.

The True mass of Ferric oxide in a vacuum.

The density of air is 0.0012g/mL.

The density of balance weight is 8.0g/mL.

It is known that the density of Ferric oxide $25°C$is;

5.24g/mL=0.2963g

To get genuine Ferric oxide in a vacuum, fill in the supplied mass of Ferric oxide, the density of Ferric oxide, density of air, and density of balance weight into the preceding equation.

The true mass of Ferric oxide in a vacuum is 0.2963g .