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(b)Calculate the Relative Formula Mass of Iron Oxide. Show Your Working.

Question

(b)Calculate the relative formula mass of iron oxide. Show your working.

Answer

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Answer

Substituting the relative atomic masses of iron and oxygen into the formula, we get: Therefore, the relative formula mass of iron oxide, Fe2O3, is 160.

Explanation

## Step 1: Identify the formula of iron oxideThe formula for iron oxide is Fe2O3. This means it contains two atoms of iron (Fe) and three atoms of oxygen (O).## Step 2: Calculate the relative atomic mass of iron (Fe) and oxygen (O)The relative atomic mass of iron (Fe) is 56 and that of oxygen (O) is 16.## Step 3: Calculate the relative formula mass of iron oxide (Fe2O3)The relative formula mass of a compound is calculated by adding up the relative atomic masses of all the atoms present in the formula.### The formula for calculating the relative formula mass is: ###