Number of Oxygen Atoms?

The proteins in our bodies are composed of molecules called amino acids. One amino acid is methionine; its molecular formula is C5H11NO2S The formula mass of Methionine is 149.23g/mol Question: what is the number of oxygen atoms in a mol of this compound. (Scientific notation) And can you please show me... show more The proteins in our bodies are composed of molecules called amino acids. One amino acid is methionine; its molecular formula is C5H11NO2S

The formula mass of Methionine is 149.23g/mol

Question: what is the number of oxygen atoms in a mol of this compound. (Scientific notation)

And can you please show me how to do this?
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