Calculate the number of grams of fe2o3 needed to react with 19.0 g c.

The mass of iron (III) oxide needed to react is 67.4 g

Explanation:

To calculate the number of moles, we use the equation:

     .....(1)

Given mass of carbon = 19.0 g

Molar mass of carbon = 12 g/mol

Putting values in equation 1, we get:

The chemical equation for the reaction of iron (III) oxide and carbon follows:

By Stoichiometry of the reaction:

3 moles of carbon reacts with 2 moles of iron (III) oxide

So, 1.58 moles of carbon will react with = of iron (III) oxide

Now, calculating the mass of iron (III) oxide by using equation 1, we get:

Molar mass of iron (III) oxide = 159.70 g/mol

Moles of iron (III) oxide = 0.422 moles

Putting values in equation 1, we get:

Hence, the mass of iron (III) oxide needed to react is 67.4 g