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1. Molecule A has a partition coefficient of 4 and a molecule B has partition coefficient...

1. Molecule A has a partition coefficient of 4 and a molecule B has partition coefficient of 2. Which molecule, will move faster across the membrane and why?

2. What is the osmolarity of 2M Fe2(SO4)3solution (write the units too)?

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1. Molecule A with partition coefficient 4 will move faster across the membrane. The higher the partition coefficient, higher will be solubility and one with greater solubility will pass more quickly across the membrane.

2. Fe2(SO4)3  solution will dissociate into, Fe2(SO4)3 ------------>. 3Fe+ +SO4- ​ (4 ions)

. Osmolarity = Molarity X dissociated ions

. = 2 mol/L X 4 ions

. = 6 Osmol/L

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