(25 points) A certain isotope of technetium has a half-life of 8 hours. How much of a 40 gram sample will be left after 16 hours? A. 10 grams B. 40 grams C. 5 grams D. 20 grams<…

Question

asked Nov 6, 2021 31.2k views

1 Answer

Oberon · Answer 1 · 2021-11-12T17:43:56+0000

Answer:

A) 10 grams

Step-by-step explanation:

16 hours = 2 half lives

This means that the number is divided in half twice.

40/2 = 20

20/2 = 10

I hope this helps!! :)