In an experiment, 16.8 g of k2so4 was dissolved in 1.00 kg of water to make a solution. the freezing point of the solution was measured to be −0.405°c . calculate the van't hoff factor (i) for this solution. the freezing point of pure water is 0°c (exactly) at 1 atm pressure and the molal freezing-point depression constant for water is 1.86°c/m.

Clouds form when water vapor to form small droplets. a. humidifies b. condenses c. evaporates d. precipitates

Lewis structure and molecular geometry for nh2cl

Maria wants to determine which type of disinfectant kills the most bacteria. which of the following is the best way for maria to determine this? a. ask ten different companies that make disinfectants which type is best. b. put the same amount and species of bacteria on ten identical plates, and add ten different kinds of disinfectant to each plate. c. interview ten different people to determine which type of disinfectant they prefer. d. put the same amount and species of bacteria on ten identical plates, and add a different disinfectant to each plate.