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An Unknown Compound Is Composed of 65

Question 92

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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