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Arginine vasopressin is a pituitary harm...

Arginine vasopressin is a pituitary harmone. It helps to regulate the amount of water in the blood by reducing the flow of urine from the kidneys. An aqueous solution containing `21.6 mg` of vasopressin in `100 mL` of solution contaning had an osmotic pressure of `3.70 mm Hg` at `25^(@)C`. What is the molecular weight of the harmone?

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