question

Note: I need answer of the each part of the following question. Must show all computations, units of measure, and cancellation of those units where applicable. Calculations should be made to 2 decimal places.

Question

Assuming that a cell contains a 310 mOsm solution of non permeable solutes. Use the formula P = iRTC (given in lab manual) and the following gram-molecular weights. Remember that T is measured in ^oK, R is 0.082 liters.Atm/^oK. mole, and C is the concentration in moles/liter. 

Na = 23

C = 12

H = 1

O = 16

Cl = 35

a)      What are the molarities of a10.00% sucrose (C₁₂H₂₂O₁₁) solution and a 0.90% sodium chloride (NaCl) solution?

b)      What is the osmotic potential (pressure) of the 10.00% sucrose solution at body temperature (37 ^oC)?

c)      What would be the fate of an erythrocyte (red blood cell) placed into a 10.00% sucrose solution? Explain what happens and your reasoning. (remember what happened to erythrocytes when placed into different solutions in the lab: you should know what is isotonic)

d)     Is it possible to have two solutions with identical molarities, but different osmotic potentials? If this is so, how could this occur? If not, why not?

e)      You place a 2.55% salt (NaCl) solution inside a bag of dialysis tubing (permeable to water but none of the solutes), and then place the bag in a beaker containing one liter of a 10.00% sucrose solution. Will osmosis occur? If so, how many grams of salt or milliliters of water must you add to the sucrose solution in the beaker to prevent osmosis from occurring?