An organic compound has an empirical formula C7H9NO2.?

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An organic compound has an empirical formula C7H9NO2.?

what is its molecular formula if the molecular weight is 417.45 g/mol?

2007-04-04 15:28:01 · 2 answers · asked by sjsugiant 2 in Science & Mathematics ➔ Chemistry

2 answers

C7H9NO2 = 139 g/mole

So the molecular formula is C21H27N3O6

2007-04-04 15:33:44 · answer #1 · answered by TheOnlyBeldin 7 · 0⤊ 0⤋

Find the empirical formula weight. Call it E
Divide the molecular formula weight by E. It should be close to an integer. Call the integer I.
Multiply the compound subscripts (remember there is a "1" for nitrogen) by I.

2007-04-04 15:33:06 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋