You used a flame ionization detector(fid) in this experiment.
(a) explain how a fid detector works.
(b) another common detector for gc is a thermal conductivity detector (tcd). describe how a tcd works.
(c) both the fid and the tcd are classified as "bulk" detectors. what does this mean?
(d) what are the advantages and disadvantages of a fid and a tcd?

Why is alchemy not considered to be a science ?

Which of these is the best way to manage a natural resource

Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.