Multiple Choice
When 0.500 g of vitamin K is dissolved in 10.0 g of camphor (Kf = 40.0°C/m) ,the freezing point of the solution is 4.43°C lower than that of pure camphor.Assuming vitamin K is a nonelectrolyte in camphor,calculate its molar mass.
A) 0.451 g/mol
B) 55.4 g/mol
C) 451 g/mol
D) 3.54 × 104 g/mol
Correct Answer:
Verified
Correct Answer:
Verified
Q188: What is the weight percent of vitamin
Q189: A solution of 62.4 g of insulin
Q190: What is the freezing point of a
Q191: Assuming that sea water is a 3.5
Q192: The following diagram shows a close-up view
Q193: Drawing (1)shows a system in which an
Q194: A solution is 4.50% by weight NaHCO<sub>3</sub>.How
Q195: Which of the following aqueous salt (NaCl)solutions
Q197: Chloroform has a boiling point of 61.1°C
Q198: Aqueous solutions of 30.0% (by weight)hydrogen peroxide,H<sub>2</sub>O<sub>2</sub>,are