Which of the following will cause the calculated molar mass of a compound determined by the freezing-point-depression method to be greater than the true molar mass? a. when the solute was added, some was spilled on the lab bench. b. water gets into the solvent after the freezing point of the pure solvent is determined. c. some of the solute molecules break apart. d. the mass of solvent is smaller than that determined from the weighing. e. all of the above

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )