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An Unknown Compound Is Composed of 65

Question 46

Multiple Choice

An unknown compound is composed of 65.44% C, 29.07% O, and 5.49% H. A sample weighing 5.34 g, when dissolved in 60.00 g H2O, lowers the freezing point to -0.600°C. What is the molecular formula of the compound? (Kf for water = 1.86°C/m; C = 12.0, O = 16.0, H = 1.0 g/mol) .


A) C3H3O
B) CHO
C) C14H11O6
D) C5H5O5
E) C7H5O3

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