How much of a radioactive kind of technetium will be left after 28 minutes if the half-life is 14 minutes and you start with 72 grams?

18 grams.

Step-by-step explanation:

28/14 = 2 so we divide 72 by 2 twice

an advantage of the standard deviation is that it increases as the dispersion of the data increases. e. the interquartile range is preferred when the data are not skewed or no have outliers. an advantage of the standard deviation is that it uses all the observations in its computation.