If one has 24 kg of Polonium and it undergoes two half-lives, how much do you have left?
A)
12 kg
B)
3 kg
C)
6 kg
D)
2 kg
IdK what it is!!!!!
12 kg to start.
At the end of one half life just 1/2 is left (that's what a half life is) so you will have 6 kg left.
At the end of the second half life you will have ?..... left?
At the end of the third hlf life you will have ? left.
At the end of the fourth half lift yu will have ? left.
etc. You just keep halving it for every half life.
Does anyone know the answer for the usa test prep Lesson 10: Earth's History Unit Test
40.0610001 Science 6 A Unit 2: Earth's History
what are the answers?
It'S B. 3g
Meh is correct, Half of Six is Three :^
Bro, I need answers too
To find out how much Polonium is left after two half-lives, we need to understand what a half-life is. The half-life of a substance is the time it takes for half of the substance to decay or change.
In this case, let's assume the half-life of Polonium is 1 hour.
After one half-life, half of the Polonium will have decayed, so we would have 12 kg left (24 kg / 2 = 12 kg).
After another half-life (2 hours total), half of the remaining Polonium will have decayed again, leaving us with 6 kg (12 kg / 2 = 6 kg).
Therefore, the correct answer is C) 6 kg.