(b) (5 marks) By mass spectrometry, we find that MSG has a molar mass of 187.127 g/mol. Deduce the molecular formula of MSG. Explain why the result of mass spectrometry is somewhat different from what you expected from your moleculu formula.

(a) (5 marks). From elemental analysis, it is found that MSG contains the following mass distribution: carbon (35.00%), hydrogen (4.69%), nitrogen (8.16%), oxygen (38.57%), sodium (13.52%). Find the empirical formula of MSG [Molar mass information (g/mol): carbon 12.01, hydrogen 1.01, nitrogen 14.01, oxygen 16.00, sodium 23.00]

題組內容

(b) (5 marks) By mass spectrometry, we find that MSG has a molar mass of 187.127 g/mol. Deduce the molecular formula of MSG. Explain why the result of mass spectrometry is somewhat different from what you expected from your moleculu formula.

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