Find the Mass Percentages C

$C$

Step 1

To find the mass of $1$ mole of $C$ 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 $C$ $=$ $(mass of C)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $C$ $=$ $(12.01000022)$

Step 3

Remove parentheses.

mass of $1$ mole of $C = 12.01000022 g$

Step 4

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 $C = \frac{12.01}{12.01000022} \cdot 100$

Divide $12.01$ by $12.01000022$ .

$0.99999998 \cdot 100$

Multiply $0.99999998$ by $100$ .

$99.99999809$

Set the number as a percent.

Mass percentage of $C = 99.99999809 %$

Find the Mass Percentages C

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