Find the Mass Percentages C_5H_4

$C_{5} H_{4}$

Step 1

To find the mass of $1$ mole of $C_{5} H_{4}$ 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 $C_{5} H_{4}$ $=$ $5 (mass of C)$ + $4 (mass of H)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $C_{5} H_{4}$ $=$ $5 (12.01000022)$ + $4 (1.00999999)$

Step 3

Simplify the result.

Simplify each term.

Multiply $5$ by $12.01000022$ .

mass of $1$ mole of $C_{5} H_{4} = 60.05000114 + 4 (1.00999999) g$

Multiply $4$ by $1.00999999$ .

mass of $1$ mole of $C_{5} H_{4} = 60.05000114 + 4.03999996 g$

Add $60.05000114$ and $4.03999996$ .

mass of $1$ mole of $C_{5} H_{4} = 64.0900011 g$

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 $C = \frac{60.05}{64.0900011} \cdot 100$

Divide $60.05$ by $64.0900011$ .

$0.93696362 \cdot 100$

Multiply $0.93696362$ by $100$ .

$93.69636287$

Set the number as a percent.

Mass percentage of $C = 93.69636287 %$

Step 5

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 $H = \frac{4.04}{64.0900011} \cdot 100$

Divide $4.04$ by $64.0900011$ .

$0.06303635 \cdot 100$

Multiply $0.06303635$ by $100$ .

$6.3036354$

Set the number as a percent.

Mass percentage of $H = 6.3036354 %$

Step 6

Find the mass percentage of each element in the molecule.

Mass percentage of $C = 93.69636287 %$

Mass percentage of $H = 6.3036354 %$

Find the Mass Percentages C_5H_4

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