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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?

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility