Find the Mass Percentages Fe(OH)_2

$F e {(O H)}_{2}$

Step 1

To find the mass of $1$ mole of $F e {(O H)}_{2}$ 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 $F e {(O H)}_{2}$ $=$ $(mass of Fe)$ + $2 (mass of O)$ + $2 (mass of H)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $F e {(O H)}_{2}$ $=$ $(55.84999847)$ + $2 (16)$ + $2 (1.00999999)$

Step 3

Simplify the result.

Simplify each term.

Multiply $2$ by $16$ .

mass of $1$ mole of $F e {(O H)}_{2} = 55.84999847 + 32 + 2 (1.00999999) g$

Multiply $2$ by $1.00999999$ .

mass of $1$ mole of $F e {(O H)}_{2} = 55.84999847 + 32 + 2.01999998 g$

Simplify by adding numbers.

Add $55.84999847$ and $32$ .

mass of $1$ mole of $F e {(O H)}_{2} = 87.84999847 + 2.01999998 g$

Add $87.84999847$ and $2.01999998$ .

mass of $1$ mole of $F e {(O H)}_{2} = 89.86999845 g$

Step 4

Find the mass percentage of $F e$ .

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

Mass percentage of $F e = \frac{55.85}{89.86999845} \cdot 100$

Divide $55.85$ by $89.86999845$ .

$0.62145322 \cdot 100$

Multiply $0.62145322$ by $100$ .

$62.14532208$

Set the number as a percent.

Mass percentage of $F e = 62.14532208 %$

Step 5

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 $O = \frac{32}{89.86999845} \cdot 100$

Divide $32$ by $89.86999845$ .

$0.35606988 \cdot 100$

Multiply $0.35606988$ by $100$ .

$35.60698848$

Set the number as a percent.

Mass percentage of $O = 35.60698848 %$

Step 6

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 $H = \frac{2.02}{89.86999845} \cdot 100$

Divide $2.02$ by $89.86999845$ .

$0.02247691 \cdot 100$

Multiply $0.02247691$ by $100$ .

$2.24769114$

Set the number as a percent.

Mass percentage of $H = 2.24769114 %$

Step 7

Find the mass percentage of each element in the molecule.

Mass percentage of $F e = 62.14532208 %$

Mass percentage of $O = 35.60698848 %$

Mass percentage of $H = 2.24769114 %$

Find the Mass Percentages Fe(OH)_2

Related Questions

Support LCMGCF.com by disabling your adblocker.