Calculate the number of remaining atoms by subtracting the number of pennies in ... The point where the vertical line touches the x-axis is the half-life of “Pennium” in minutes. This standard ...

0.0625 of the original sample This could then be incorporated into other data. So, if the half-life is two days, four half-lives is 8 days. If a sample has a count rate of 3,200 Bq at the start ...