Final answer:
Without the half-life value of potassium-44, the calculation of the remaining amount after 44 minutes cannot be completed. The half-life is essential in such calculations involving radioactive decay.
Step-by-step explanation:
To calculate the remaining amount of potassium-44 after 44 minutes, we need to know its half-life, which is not provided in the question or the reference information. Assuming we had the half-life, we would use the formula for exponential decay based on half-lives to find the remaining amount. Unfortunately, without the half-life, we cannot provide a numerical answer. The concept of half-life is fundamental in radioactive decay and is used to determine how much of a radioactive substance remains after a certain period.