What is the molecular formula of this compound ?

Question

65.45 % C
5.49 % H
29.06 % O

5.51 g of the compound fills a 193.0 ml bottle with a pressure of 4752.4 mm Hg at a temperature of 21.0oC

Answer 1

65.45%/12 = 5.45

5.49%/1 =5.49

29.06%/16 = 1.82

5.45/1.82 = 2.99

5.49/1.82 = 3.02

The empirical formula is C3H3O. The formula weight is 55. You have something very wrong, because the molecular weight cannot be 3713.

Let the compound be called X. 21.0C=294K

5.51gX/193.0mL x 273K/294K x 4752.4mmHg/760mmHg x 22,400mLX/1molX = 3713g/mol