Find the Mass Percentages CaCO_3

$C a C O_{3}$

Step 1

To find the mass of $1$ mole of $C a C O_{3}$ 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 $C a C O_{3}$ $=$ $(mass of Ca)$ + $(mass of C)$ + $3 (mass of O)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $C a C O_{3}$ $=$ $(40.08000183)$ + $(12.01000022)$ + $3 (16)$

Step 3

Simplify the result.

Remove parentheses.

mass of $1$ mole of $C a C O_{3} = 40.08000183 + 12.01000022 + 3 (16) g$

Multiply $3$ by $16$ .

mass of $1$ mole of $C a C O_{3} = 40.08000183 + 12.01000022 + 48 g$

Add $40.08000183$ and $12.01000022$ .

mass of $1$ mole of $C a C O_{3} = 52.09000205 + 48 g$

Add $52.09000205$ and $48$ .

mass of $1$ mole of $C a C O_{3} = 100.09000205 g$

Step 4

Find the mass percentage of $C a$ .

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

Mass percentage of $C a = \frac{40.08}{100.09000205} \cdot 100$

Divide $40.08$ by $100.09000205$ .

$0.40043959 \cdot 100$

Multiply $0.40043959$ by $100$ .

$40.04395961$

Set the number as a percent.

Mass percentage of $C a = 40.04395961 %$

Step 5

Find the mass percentage of $C$ .

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

Mass percentage of $C = \frac{12.01}{100.09000205} \cdot 100$

Divide $12.01$ by $100.09000205$ .

$0.119992 \cdot 100$

Multiply $0.119992$ by $100$ .

$11.99920047$

Set the number as a percent.

Mass percentage of $C = 11.99920047 %$

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 $O = \frac{48}{100.09000205} \cdot 100$

Divide $48$ by $100.09000205$ .

$0.47956837 \cdot 100$

Multiply $0.47956837$ by $100$ .

$47.95683785$

Set the number as a percent.

Mass percentage of $O = 47.95683785 %$

Step 7

Find the mass percentage of each element in the molecule.

Mass percentage of $C a = 40.04395961 %$

Mass percentage of $C = 11.99920047 %$

Mass percentage of $O = 47.95683785 %$

Find the Mass Percentages CaCO_3

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