6.20 g of fluorene is added to 0.400 kg of benzene and it was found that the freezing point
of benzene decreased by 0.478 °C. What is the
experimental molar mass of fluorene? g/mol
(Kf of benzene = 5.12 K. kg/mol, van't Hoff factor
of fluorene = 1)

When hydrogen peroxide (h2o2) is added to potassium iodide (ki) solution, the hydrogen peroxide decomposes into water (h2o) and oxygen (o2). the chemical equation for the decomposition reaction is: 2h2o2—> 2h2o + o2. what is the role of the potassium iodide in this reaction? a. reactant. b. product. c. precipitate. d. catalyst.