Question

You are asked to mix a 1000 ml bag of 0.45% NaCl using a liter bag of sterile water and concentrated sodium chloride for injection. How many milligrams of sodium chloride will be needed to mix this IV?

A. 4,500 mg
B. 9,000 mg
C. 4,050 mg
D. 2,250 mg

Answer 1

To make a 0.45% NaCl solution for IV, you would need 4,500 milligrams of sodium chloride.

Step-by-step explanation:

To calculate the mass of sodium chloride needed to prepare the IV solution, we need to first determine the amount of sodium chloride present in the 0.45% NaCl solution.

The concentration of the solution is given as 0.45%, which means that there are 0.45 grams of sodium chloride per 100 mL of solution.

Since we have 1000 mL of solution, we can use a proportion to calculate the mass of sodium chloride needed. We set up the proportion as follows:

0.45g NaCl ⁄ 100mL = x g NaCl ⁄ 1000mL

Cross multiplying and solving for x, we find that x = 4.5 grams of sodium chloride.

To convert grams to milligrams, we multiply by 1000. Therefore, the answer is 4,500 milligrams of sodium chloride.