How much 50% Dextrose should be added to create a 2.5% solution in an 800 mL bag?

To determine how much 50% dextrose is needed to create a 2.5% solution in an 800 mL bag, we can use the concept of dilutions and the formula for concentrations.

First, note that a 50% dextrose solution means there are 50 grams of dextrose in every 100 mL. For the desired 2.5% solution, there needs to be 2.5 grams of dextrose per 100 mL of the final solution.

When calculating the total amount of dextrose required in 800 mL of the 2.5% solution, we can use the following calculations:

• The total dextrose required for an 800 mL bag at 2.5%:

[

800 , \text{mL} \times 0.025 = 20 , \text{grams}

]

Now, to find out how much of the 50% solution is needed to achieve 20 grams of dextrose:

• Since the 50% solution contains 50 grams in 100 mL, the grams of dextrose in 1 mL of the 50% solution is