Interpretation: The number of molecules of compound present in an athlete’s urine needs to be determined.
Concept Introduction: The relation between the number of moles, mass, and molar mass of a substance is as follows:
Here, m is mass and M is molar mass.
Also, according to
Explanation of Solution
The molar mass compound found in an athlete’s urine is 312 g/mol. The mass of the compound is 30.0 mg. The number of moles can be calculated as follows:
Putting the values,
Therefore, the number of moles of the compound is
The number of molecules can be calculated as follows:
Therefore, the number of molecules of the compound is
Chapter 10 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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