Find the Mass Percentages HClO_2

$H C l O_{2}$

Step 1

To find the mass of $1$ mole of $H C l O_{2}$ 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 $H C l O_{2}$ $=$ $(mass of H)$ + $(mass of Cl)$ + $2 (mass of O)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $H C l O_{2}$ $=$ $(1.00999999)$ + $(35.45000076)$ + $2 (16)$

Step 3

Simplify the result.

Remove parentheses.

mass of $1$ mole of $H C l O_{2} = 1.00999999 + 35.45000076 + 2 (16) g$

Multiply $2$ by $16$ .

mass of $1$ mole of $H C l O_{2} = 1.00999999 + 35.45000076 + 32 g$

Add $1.00999999$ and $35.45000076$ .

mass of $1$ mole of $H C l O_{2} = 36.46000075 + 32 g$

Add $36.46000075$ and $32$ .

mass of $1$ mole of $H C l O_{2} = 68.46000075 g$

Step 4

Find the mass percentage of $H$ .

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

Mass percentage of $H = \frac{1.01}{68.46000075} \cdot 100$

Divide $1.01$ by $68.46000075$ .

$0.01475314 \cdot 100$

Multiply $0.01475314$ by $100$ .

$1.47531403$

Set the number as a percent.

Mass percentage of $H = 1.47531403 %$

Step 5

Find the mass percentage of $C l$ .

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

Mass percentage of $C l = \frac{35.45}{68.46000075} \cdot 100$

Divide $35.45$ by $68.46000075$ .

$0.51782061 \cdot 100$

Multiply $0.51782061$ by $100$ .

$51.78206194$

Set the number as a percent.

Mass percentage of $C l = 51.78206194 %$

Step 6

Find the mass percentage of $O$ .

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

Mass percentage of $O = \frac{32}{68.46000075} \cdot 100$

Divide $32$ by $68.46000075$ .

$0.46742622 \cdot 100$

Multiply $0.46742622$ by $100$ .

$46.74262291$

Set the number as a percent.

Mass percentage of $O = 46.74262291 %$

Step 7

Find the mass percentage of each element in the molecule.

Mass percentage of $H = 1.47531403 %$

Mass percentage of $C l = 51.78206194 %$

Mass percentage of $O = 46.74262291 %$

Find the Mass Percentages HClO_2

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