19) Larry, Darryl and Jenny are using a gas chromatograph to determine the identify 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?

In which process is oxygen absorbed by an organism asap apex

How do you think earths interior affects what is happening on the surface? 2. how do fossils support the continental drift hypothesis? 3. how does sea- floor spreading support the hypothesis of continental drift? 4.what do scientists observe when they studied the magnetic fields of rocks on the sides of mid-ocean ridges? 5. what is a tectonic plate ? 6. explain mantle convection 7.how can movements of the continents affect earths climate? 8. what occurs during drifting?

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees