Larry, Darryl, and Jenny are using a gas chromatograph to determine the identity of a chemical sample. They inject the sample into the machine and
then wait to see how long it takes the chemicals in their sample to move
from one end of a tube in the machine to the other end. They use this time
to help them determine the identity of the chemical in the sample. Which is
an unavoidable error in this experiment?
1.Darryl washed the sample with the wrong solvent.
2.Injection of the sample into the machine requires a certain minimum time.
3.Darryl set the temperature on the machine to 350*C instead of 400*C.
4.The tube in the machine is on its seventh run and may contain the remains of old experiments.