How many mL of a 0.9% sodium chloride solution contains 4.5 grams of sodium chloride?

To determine how many milliliters of a 0.9% sodium chloride solution contains 4.5 grams of sodium chloride, we first need to understand what a 0.9% sodium chloride solution means. A 0.9% solution indicates that there are 0.9 grams of sodium chloride in every 100 milliliters of solution.

Given that you want to find out how many mL contain 4.5 grams, we can set up a proportion based on the concentration:

If 0.9 grams are in 100 mL, then we can calculate how many mL are needed for 4.5 grams using the following proportion:

0.9 grams / 100 mL = 4.5 grams / X mL.

By cross-multiplying and solving for X, we find:

0.9 * X = 4.5 * 100,

0.9X = 450,

X = 450 / 0.9,

X = 500 mL.

This calculation shows that 500 mL of a 0.9% sodium chloride solution contains 4.5 grams of sodium chloride. The reasoning behind this is directly linked to the inherent definition of the concentration