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∙ 11y ago
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Red blood cells placed in a 0.3m urea solution urea is permeable will exhibit?
The urea entering the cell will cause an osmotic imbalance causing water to follow it into the cell. When a large amount of water enters the cell is heamolysed causing a colour change. Urea can't be permiable it is a chemical and doesn't have a cell membrane perhaps you are asking if urea can permiate RBC's or perhaps you mean to ask if RBC's are permiable to urea at this concentration?
What exactly does a range hood do?
Hmmm, that depends, do you actually cook? Kidding, the kitchen range hood is necessary.They work wonders at keeping the bad smells out of the rest of the house.In addition, you should also know about ductless vents and duct vents.Personally, I don't recommend buying a ductless vent unless the client insists or they can't drill a vent hole in the kitchen.I believe most homeowners will agree that a ducted range hood is superior to the ductless models in several ways: moistre and heat reduction, odor reduction, grease capture, maintenance, moise.
