Percent (or mass) composition
Calculate the percent composition for each of the compounds below. Rank order the elements from highest percent by mass to lowest percent by mass and separate each element by a ">" symbol. In order to answer these questions, you must first work out the percent composition of each element on separate sheet of paper, then rank order them in the "fill-in" fields in quiz.
Example: Rank order the mass percents of each element in the compound NaHCO3.
On your scratch paper
Na: 27.4%
H: 1.2%
C: 14.3%
O: 57.1%
In the quiz fill-in field
O > Na > C > H
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