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The following experiment is carried out in a physiology lab. Red blood cells are placed in...

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Medical Sciences

The following experiment is carried out in a physiology lab. Redblood cells are placed in different solutions: distilled water,0.45% saline, 0.9% saline, 5% urea, and 5% glucose. The molecularmass for each molecule is given: NaCl = 58.44 gm/mole; urea = 60.06gm/mole; glucose = 180.16 gm/mole.

For each of the solutions used, calculate the osmolarity. To dothis, you will need to convert solutions given in percents toosmolarity. A 0.45% saline solution has 0.45 gm/100 mL NaCl, or 4.5gm/L. The same is true for the other molecules.

Fill in the osmolarity of each solution to the nearest integerusing the choices provided.

  • Distilled water = ... mOsm
  • 0.45% saline = ... mOsm
  • 0.9% saline = ... mOsm
  • 2.0% urea = ... mOsm
  • 5% glucose = ... mOsm

The choices are: 308, 77, 0, 154, 520, 833

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