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3 years ago

What information is needed to calculate the percent composition of a compound

2 answers:

6 0

Percent Composition by Mass. Percent composition is calculated from a molecular formula by dividing the mass of a single element in one mole of a compound by the mass of one mole of the entire compound. This value is presented as a percentage.

The best answer. :)

marysya [2.9K]3 years ago

5 0

Answer:

Molecular formula, molecular mass and the mass of each element in the molecule.

Explanation:

Percent Composition by Mass is the percentile of each element present in a molecule.

It is calculated by dividing the molar mass of a element by the molecule molar mass, multiplied by 100

Eg the mass percent compositionof carbon in carbon dioxide is 27.27%

Molecular formula: CO2

Molecular Mass: 44g/mol

C molar mass: 12g/mol

O molar mass: 16g/mol

$Percent_{carbon} =\frac{12}{44}*100=27.27$

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3 years ago

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All that remains is the silicon dioxide (SiO2) that is written correctly.

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