Chemistry

A compound with the empirical formula CH2O has a molar mass of approximately 90 g/mol. What is its molecular formula?

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  1. Empirical formula is CH2O. Molecular formuls is (CH2O)x
    The empirical formula mass is 12+2+16 = 30 so the molar mass is
    30*x = 90
    x = 90/30 = 3 therefore, that must be 3 units of CH2O. You can write the molecular formula as (CH2O)3 or as C3H6O3

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    DrBob222
  2. Thanks! This was extremely helpful since I have a test tomorrow!

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