Chapter 29, Problem 42P

(a)

To determine

The time required by Strontium $\text{-90}$ $\left(\text{S}\text{r}\right)$ to get reduced to $\left(\frac{1}{16}\right)$ of its initial quantity.

(b)

To determine

The time required by Strontium $\text{-90}$ $\left(\text{S}\text{r}\right)$ to get reduced to $\left(\frac{1}{64}\right)$ of its initial quantity.

(c)

To determine

The time required by Strontium $\text{-90}$ $\left(\text{S}\text{r}\right)$ to get reduced to $\left(\frac{1}{100}\right)$ of its initial quantity.