When a pendulum is at maximum displacement, which statement is true? the potential energy is at its greatest point. the potential energy is at its lowest point. the amplitude is at its lowest point. the frequency is at its greatest point.

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?

Which diagram represents the phase tha occurs after a solid melts?

Which of the following substances is the most soluble in water? a. sodium chloride b. methane c. bromine d. carbon