Find the Mass Percentages SgSiBH

$S g S i B H$

Step 1

To find the mass of $1$ mole of $S g S i B H$ 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 $S g S i B H$ $=$ $(mass of Sg)$ + $(mass of Si)$ + $(mass of B)$ + $(mass of H)$

Step 2

Fill in the atomic masses from the periodic table.

mass of $1$ mole of $S g S i B H$ $=$ $(266)$ + $(28.09000015)$ + $(10.81000041)$ + $(1.00999999)$

Step 3

Simplify the result.

Remove parentheses.

mass of $1$ mole of $S g S i B H = 266 + 28.09000015 + 10.81000041 + 1.00999999 g$

Add $266$ and $28.09000015$ .

mass of $1$ mole of $S g S i B H = 294.09000015 + 10.81000041 + 1.00999999 g$

Add $294.09000015$ and $10.81000041$ .

mass of $1$ mole of $S g S i B H = 304.90000057 + 1.00999999 g$

Add $304.90000057$ and $1.00999999$ .

mass of $1$ mole of $S g S i B H = 305.91000056 g$

Step 4

Find the mass percentage of $S g$ .

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

Mass percentage of $S g = \frac{266}{305.91000056} \cdot 100$

Divide $266$ by $305.91000056$ .

$0.86953679 \cdot 100$

Multiply $0.86953679$ by $100$ .

$86.95367902$

Set the number as a percent.

Mass percentage of $S g = 86.95367902 %$

Step 5

Find the mass percentage of $S i$ .

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

Mass percentage of $S i = \frac{28.09}{305.91000056} \cdot 100$

Divide $28.09$ by $305.91000056$ .

$0.09182439 \cdot 100$

Multiply $0.09182439$ by $100$ .

$9.18243926$

Set the number as a percent.

Mass percentage of $S i = 9.18243926 %$

Step 6

Find the mass percentage of $B$ .

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

Mass percentage of $B = \frac{10.81}{305.91000056} \cdot 100$

Divide $10.81$ by $305.91000056$ .

$0.03533719 \cdot 100$

Multiply $0.03533719$ by $100$ .

$3.53371906$

Set the number as a percent.

Mass percentage of $B = 3.53371906 %$

Step 7

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 $H = \frac{1.01}{305.91000056} \cdot 100$

Divide $1.01$ by $305.91000056$ .

$0.00330162 \cdot 100$

Multiply $0.00330162$ by $100$ .

$0.33016246$

Set the number as a percent.

Mass percentage of $H = 0.33016246 %$

Step 8

Find the mass percentage of each element in the molecule.

Mass percentage of $S g = 86.95367902 %$

Mass percentage of $S i = 9.18243926 %$

Mass percentage of $B = 3.53371906 %$

Mass percentage of $H = 0.33016246 %$

Find the Mass Percentages SgSiBH

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