Cortisone Consists of Molecules, Each of Which Contains 21 Atoms

question 76

Multiple Choice

Cortisone consists of molecules, each of which contains 21 atoms of carbon (plus other atoms) . The mass percentage of carbon in cortisone is 69.98%. What is the molar mass of cortisone?

• A) 287.6 g/mol
• B) 360.4 g/mol
• C) 176.5 g/mol
• D) 252.2 g/mol
• E) 312.8 g/mol

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