Final answer:
To find the grams of sodium chloride in a 0.92% saline solution, you can use a proportion to convert the percentage to grams and then multiply by the volume of the solution. The answer is 4.6 g NaCl.
Step-by-step explanation:
To calculate the grams of sodium chloride in a 0.92% (w/v) saline solution, you need to convert the percentage to grams and then multiply by the volume of the solution.
0.92% (w/v) means that there are 0.92 grams of sodium chloride per 100 mL of solution. To find the grams in 500 mL of solution, you can set up a proportion:
(0.92 grams / 100 mL) = (x grams / 500 mL)
Solving for x, the grams of sodium chloride in 500 mL of solution, we find x = 4.6 grams. Therefore, the answer is 4.6 g NaCl (option A).