\begin{tabular}{|r|r|r|} \hline \multicolumn{1}{|c|}{ half life for 100 pennies } \\ \hline times & #of undeclared atoms

[answerhappygod]

Begin Tabular R R R Hline Multicolumn 1 C Half Life For 100 Pennies Hline Times Of Undeclared Atoms 1 (11.05 KiB) Viewed 44 times

\begin{tabular}{|r|r|r|} \hline \multicolumn{1}{|c|}{ half life for 100 pennies } \\ \hline times & #of undeclared atoms \\ \hline 10 & 53 \\ \hline 20 & 23 & \\ \hline 30 & 11 & \\ \hline 40 & 7 & \\ \hline 50 & 4 & \\ \hline 60 & 2 \\ \hline 70 & 0 & \\ \hline 80 & 0 & \\ \hline 90 & 0 & \\ \hline 100 & 0 & \\ \hline \end{tabular} A. document and graph time at 50%,25%,12.5%,6.25% and elapsed time B. average elapsed time of pennium? c. what is the half life of the element pennium? D. at the end of two half lives, what fraction of atoms had not decayed?