Find the Mass Percentages Mg

$M g$

Step 1

To find the mass of $1$ mole of $M g$ 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 $M g$ $=$ $(mass of Mg)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $M g$ $=$ $(24.30999946)$

Step 3

Remove parentheses.

mass of $1$ mole of $M g = 24.30999946 g$

Step 4

Find the mass percentage of $M g$ .

The mass composition percentage is the mass of $M g$ divided by the mass of the entire molecule converted to a percentage.

Mass percentage of $M g = \frac{24.31}{24.30999946} \cdot 100$

Divide $24.31$ by $24.30999946$ .

$1.00000002 \cdot 100$

Multiply $1.00000002$ by $100$ .

$100.00000219$

Set the number as a percent.

Mass percentage of $M g = 100.00000219 %$

Find the Mass Percentages Mg

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