Four u tubes each have distilled water in the right arm, a solution in the left arm, and a semipermeable membrane between arms. a. if the solute is kcl, which solution is most concentrated? b. if each solute is different but all the solutions have the same molarity, which contains the smallest number of dissolved ions?

c is the answer because when something is left after something evaporates that shows the chemical change.

just did the assignment and the answer was #1 +2 n

a gas, having a molecular weight of 13 kg/kmol and a kinematic viscosity of 0.25 cm2/s, flows through a pipe 0.25 m internal diameter and 5 km long at the rate of 0.4 m3/s and is delivered at atmospheric pressure.