Find the Mass Percentages N_2

$N_{2}$

Step 1

To find the mass of $1$ mole of $N_{2}$ 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 $N_{2}$ $=$ $2 (mass of N)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $N_{2}$ $=$ $2 (14.01000022)$

Step 3

Multiply $2$ by $14.01000022$ .

mass of $1$ mole of $N_{2} = 28.02000045 g$

Step 4

Find the mass percentage of $N$ .

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

Mass percentage of $N = \frac{28.02}{28.02000045} \cdot 100$

Divide $28.02$ by $28.02000045$ .

$0.99999998 \cdot 100$

Multiply $0.99999998$ by $100$ .

$99.99999836$

Set the number as a percent.

Mass percentage of $N = 99.99999836 %$

Find the Mass Percentages N_2

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