Final answer:
The percentage of fat in the 9.0 ounce meat sample is approximately 8.58%, which is calculated by first converting the ounces to grams and then dividing the mass of fat by the total mass before multiplying by 100.
Step-by-step explanation:
To determine the percentage of fat present in the meat sample, we will first convert the ounces to grams to have consistent units. Since 1 ounce is approximately equal to 28.35 grams, 9.0 ounces is thus approximately 9.0 × 28.35 grams, which equals 255.15 grams.
To calculate the percentage of fat, the mass of fat (21.9 grams) is divided by the total mass of the meat sample (255.15 grams) and then multiplied by 100. The calculation is as follows:
Percentage of fat = × 100
Percentage of fat = 21.9 g / 255.15 g × 100
Percentage of fat ≈ 8.58%
So, there is approximately an 8.58% fat content by mass in the 9.0 ounce meat sample.