Balance
Na +CaCl, Ca + NaCl
PLS HELP ITS URGENT

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?

Iknow the answer to 13 is b and 14 is d. i just need to know why the correct answers are correct

How manyatoms of mercury are in 1.4214e+1 ml sample