If 10 ml of propanone (c3h6o, or acetone) is diluted with water to a total solution volume of 200 ml, what is the percent by volume of propanone in the solution

Apeak with a retention time of 407 s has a width at half-height (w1/2) of 7.6 s. a neighboring peak is eluted 17 s later with a w1/2 of 9.4 s. a compound that is known not to be retained was eluted in 2.5 s. the peaks are not baseline resolved. how many theoretical plates would be needed to achieve a resolution of 1.5?

Over the last 90 years, scientists have added to the body of evidence supporting the big bang theory. what is the latest piece of evidence discovered in 2014?

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely