Questions A-02

Pharmaceutical Calculation Category:
1. You have a vial of magnesium sulfate solution with concentration of 4.06 mEq/ml. Express this concentration as mg/ml and mOsmol/liter. Molecular weight of magnesium sulfate is 120.
2. Extra strength Alka-Seltzer effervescent tablets contain 1,985 mg Sodium bicarbonate per tablet. How many millimoles of sodium bicarbonate are obtained in each tablet? Molecular weight of Sodium bicarbonate is 84.
3.Half normal saline is 0.45% sodium chloride. Express this concentration in mEq/ml.
4. Calculate the NaCl equivalent for glycerin, a non-electrolyte with a MW of 92.
5. Zinc sulfate is a 2-ion electrolyte, dissociating 40% in weak solutions. Calculate its dissociation factor.

Answers will be given this week.