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Calculating Percent Composition
Mrs. Page10th Chemistry
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•Percent Composition - The percent composition of a component in a compound is the percent of the total mass of the compound that is due to that component.
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What is the percentage of the various elements in Sodium Carbonate, Na2CO3
• Find the molar mass of the compound by adding up the masses of each atom in the compound. • Calculate the mass due to the component in the compound you are for
which you are solving by adding up the mass of these atoms. • Divide the mass due to the component by the total molar mass of the
compound and multiply by 100.
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What is the percentage of the various elements in SiCl3Br• Find the molar mass of the compound by adding up the masses of
each atom in the compound. • Calculate the mass due to the component in the compound you are
for which you are solving by adding up the mass of these atoms. • Divide the mass due to the component by the total molar mass of
the compound and multiply by 100.
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What is the percentage of the various elements in Ammonium sulfate?• Find the molar mass of the compound by adding up the masses of
each atom in the compound. • Calculate the mass due to the component in the compound you are
for which you are solving by adding up the mass of these atoms. • Divide the mass due to the component by the total molar mass of the
compound and multiply by 100.