Answer:
Step-by-step explanation:
The different isotopes have different "half-lives" – the time it takes to lose half of its radioactivity. Pu-239 has a half-life of 24,100 years and Pu-241's half-life is 14.4 years. Substances with shorter half-lives decay more quickly than those with longer half-lives, so they emit more energetic radioactivity.
Answer:You'll have to show us what 2 area models
Step-by-step explanation:
Answer:
4/15
Step-by-step explanation:
8/16 chance of first choco
times
8/15 because its 1 choco less after the first 1