Answer :
Final answer:
We cannot accurately calculate the milligrams of caffeine in the 12 oz beverage without knowing the concentration of caffeine in the sample.
Explanation:
To calculate the milligrams of caffeine in a beverage, we need to know the concentration of caffeine in the sample and the volume of the sample. In this case, we are given that the sample is 20 ml of a caffeinated diet soft drink.
However, we don't have the concentration of caffeine in the sample. Without this information, we cannot accurately calculate the milligrams of caffeine in the 12 oz beverage.
In the previous answer given as 260mg, the concentration of caffeine and the calculations were not shown. Therefore, we cannot rely on that answer without further information.
Learn more about calculating the milligrams of caffeine in a beverage here:
https://brainly.com/question/212517
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