Chemistry Examples

calculate the molar mass of $F e O_{4}$

Step 1

To find the mass of $1$ mole of $F e O_{4}$ look up the atomic mass of each element and multiply it by the number of atoms contained in each element in the molecule.

mass of $1$ mole of $F e O_{4}$ $=$ $(mass of Fe)$ + $4 (mass of O)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $F e O_{4}$ $=$ $(55.84999847)$ + $4 (16)$

Step 3

Simplify the result.

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Step 3.1

Multiply $4$ by $16$ .

mass of $1$ mole of $F e O_{4} = 55.84999847 + 64 g$

Step 3.2

Add $55.84999847$ and $64$ .

mass of $1$ mole of $F e O_{4} = 119.84999847 g$