1 How much sodium chloride would you weigh out to make 50 ml

1. How much sodium chloride would you weigh out to make 50 ml of 0.9% (w/v) saline (NaCl)?

Solution

0.9% NaCl solution means, 100 ml of solution contains 0.9 grams of NaCl.

To prepare 50 ml of 0.9% NaCl solution, take 0.45 grams of NaCl, dissolve it in water and make the volume up to 50 ml. The resulting solution is, 0.9% saline o 50 mL.