How much fluid is needed to create a 2% solution using a 20 index fluid to make one gallon?

To determine how much of a 20 index embalming fluid is needed to create a 2% solution, you can use the formula for dilution, which relates the concentration desired to the total volume and the concentration of the solution being used.

First, let’s convert one gallon into ounces, since the calculation requires fluid ounces. There are 128 ounces in one gallon.

Next, for a 2% solution, you are looking for the amount of active ingredient (the embalming fluid) that will make up 2% of the total volume (128 ounces in this case). To find out how many ounces of active ingredient you need:

1. Calculate 2% of 128 ounces:

[

0.02 \times 128 = 2.56 \text{ ounces of active ingredient}.

]

Now, since the index of the fluid is 20, that indicates the concentration of formaldehyde in that solution. The formula to convert the amount of active ingredient needed into the volume of the index solution required is:

[

\text{Volume of index fluid} = \frac{\text{Amount of active ingredient}}{\text{Index of fluid}}.

]

Substituting the values:

[