A 23.0%by mass LiCl solution is prepared in water. What is the mole fraction of the water? explain please ...

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?

George is a dalmatian puppy. describe what happens to light that allows you to see george’s black and white coat.

What is the lowest number energy level where a d sublevel is found