In the event no property damage or loss occurs during an insurance contract period, the premium payments were wasted only if the policyholder

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?

Iwill give extra points to who gets this right

7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '