Yes, anything that lives. Cells have a nucleus, they are alive and can reproduce. (Not man made/abiotic)
Yes, because the net ionic is equation will yield BaCO3 as a precipitate because it is insoluble in water
Answer:
8.10 hours.
Explanation:
You start with 500.0g.
After the first half-life, you have 250.0g.
After the second, you have 125.0g.
After the third, you have 62.50g.
Therefore, it takes three half-lives to decay to 62.50g.
Therefore, the elapsed time must be triple the length of one half-life.
24.3
3
=
8.10
, so it is 8.10 hours.
Explanation: