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# Percent Composition

## Calculating the percentage by mass of each element in a compound.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Percent Composition

Describes the process of calculating percent composition of a compound.
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## Percent Composition

by Sara E. Vogt //at grade
Describes the process of calculating percent composition of a compound.
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• Real World Application

## Ingredients For Air

We see our sky everyday. But what is it made of?
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• Study Guide