How many grams of iron are in 21.6 g of iron(III) oxide?
But by the composition of the oxide, there are thus
An extraordinary percentage of our budgets goes into rust prevention;
There are 15.1 g of iron in the sample.
Step 1. Calculate the molar mass of
This tells us that there are 111.68 g
Step 2. Calculate the mass of
∴ In 21.6 g