Chemistry Examples

Find the Mass Percentages H_2O
Step 1
To find the mass of mole of 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 mole of +
Step 2
Fill in the atomic masses from the periodic table.
mass of mole of +
Step 3
Simplify the result.
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Step 3.1
Remove parentheses.
mass of mole of
Step 3.2
Multiply by .
mass of mole of
Step 3.3
Add and .
mass of mole of
mass of mole of
Step 4
Find the mass percentage of .
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Step 4.1
The mass composition percentage is the mass of divided by the mass of the entire molecule converted to a percentage.
Mass percentage of
Step 4.2
Divide by .
Step 4.3
Multiply by .
Step 4.4
Set the number as a percent.
Mass percentage of
Mass percentage of
Step 5
Find the mass percentage of .
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Step 5.1
The mass composition percentage is the mass of divided by the mass of the entire molecule converted to a percentage.
Mass percentage of
Step 5.2
Divide by .
Step 5.3
Multiply by .
Step 5.4
Set the number as a percent.
Mass percentage of
Mass percentage of
Step 6
Find the mass percentage of each element in the molecule.
Mass percentage of
Mass percentage of
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