well if you don't re crystilize near the boiling point you will most certainly loose your solute to the glass ware as vapours. if you recrystalize you will remove and separate the components more effectively.
Good analytical and accounting skills
Rapid distillation leads to more carry over of the higher boiling point material.
Arteries carry blood from the heart to other parts of the body. Veins are much smaller vessels that are used to bring the blood back to the heart.
Usually they carry crude oil. In general they are built to carry bulk liquids
should carry carefully and with care
The compound that you are trying to recrystallize is soluble in hot solvent but relatively insoluble in cold solvent. You also must remove an impurity that is insoluble in hot and cold solvent. The first filtration (a hot filtration) is to filter out the impurity. The second filtration (a cold filtration) is to filter out the (hopefully pure) recrystallized compound.
It's not a "nutrient" as such but is vital to carry nutrients etc around the body, and to act as the solvent to give electrolytes necessary in cellular processes.
It is not necessary for a business to carry business insurance.
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bacteria
Because they carry the risk.
A single cell has everything necessary to carry out life's activities.