Interpretation: The number of fluorine atoms in a 150 mg tablet of given antibacterial drug 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 molecular formula of the given antibacterial drug is
The molar mass of the drug can be calculated from the
Therefore, the molar mass of the drug will be:
Thus, the molar mass of the drug is
Now, the number of moles can be calculated as follows:
Substitute the values,
Therefore, the number of moles is
Now, in 1 mol of a drug, there is 1 mol of F; thus, the number of moles of F in the given tablet is
According to Avogadro’s number, 1 mol of a substance gives
Thus, the number of atoms of fluorine is
Chapter 10 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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