Interpretation: The percent composition of the compound formed by combining 2.70 g of aluminum with oxygen to form 5.10 g of aluminum oxide should be calculated.
Concept Introduction: The percent composition represents the relative amount of the elements in a compound. It is represented as the percent by mass of each element in the compound.
Answer to Problem 71A
The mass percent composition of
Explanation of Solution
The percent by mass of each element in the compound represents percent composition as:
The mass of the oxygen formed by combining 2.70 g of aluminum with oxygen to form 5.10 g of aluminum oxide is:
Now determining the percent composition of
Now determining the percent composition of
The obtained percent of the elements add up to:
Chapter 10 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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