To purify caffeine (from black tea), the isolated material (crude caffeine) was subjected to sublimation. If we consider that the aqueous tea extract contained caffeine, gallic acid and chlorophyll, what impurities may we be removing at this stage of the experiment? Briefly explain.

i'm pretty sure it is letter c.) car

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.