Use the percent composition of total protein in skim milk to determine the percent of the total protein that is due to the casein fraction.

You need to tell us more about the problem. I have no idea what the percent composition of total protein in skim milk is.

it is 16.4%

And what is the casein fraction?

the casein recorded was 0.91 grams

idek how to do it

To determine the percent of the total protein that is due to the casein fraction in skim milk, you will need to know the percent composition of total protein in skim milk and the percent composition of casein in total protein.

To calculate the percent of the total protein that is due to the casein fraction, follow these steps:
1. Obtain the percent composition of total protein in skim milk. Let's say, for example, it is 3%.
2. Determine the percent composition of casein in total protein. This information might be available from a lab test or through research. Let's say, for example, it is 80%.
3. Multiply the percent composition of total protein in skim milk (3%) by the percent composition of casein in total protein (80%) by dividing 80 by 100 and multiplying the result by 3.

Here's the formula:
Percent of casein in total protein = (Percent of total protein in skim milk / 100) * (Percent of casein in total protein / 100)

In this example:
Percent of casein in total protein = (3 / 100) * (80 / 100)

Calculate the value:
Percent of casein in total protein = 0.03 * 0.80
Percent of casein in total protein = 0.024

So, the percent of the total protein that is due to the casein fraction in skim milk is approximately 2.4%.