The earth's crust is: made of rock
the thinnest layer
broken into large pieces called plates
all of the above

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?

What term is missing from the central region that describes hypotheses, theories, and laws? popular predictable mathematical falsifiable

The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?