# Thread: [attention grabbing title here]

1. Originally Posted by Ian
im gonna fail my bio class when i take it next fall
Me Too Never Trust The Reaper

2. Originally Posted by Disturbed
6.25 Grams of parent material left. Find the daughter material yourself.

And mega tons = million tons. He is trolling, that would be 10,000,000,000 pounds. (10 billion.) Now how the fuck would that come out out of 100 grams?
i dont even know how you got the parent mater amount, ho wam i supposed to finish it D:

Originally Posted by Saboteur

AHAHAHAHAHA

do it.
i did

Originally Posted by Ian
i only learned neutrons, electrons and protons in my high school at 11th grade in chemistry.

college freshmen
isnt that all your supposed to learn?
thats all i see my chem. friends studying...

Updated post:

Originally Posted by Disturbed
6.25 Grams of parent material left.

How? Half life of a radioactive material is x. Meaning, every x years the amount of radioactivity will have dropped by 50%. See where this is going? Find the daughter material yourself.

And mega tons = million tons. He is trolling, that would be 10,000,000,000 pounds. (10 billion.) Now how the fuck would that come out out of 100 grams?

4. DAYUM

I took chem & physics class - I should know this lol. I remember doing this :/

Imma guess:

So it's done 20,000\5,000 cycles - so it's done 4 cycles.

100/2 = 50
50/2 = 25
25/2 = 12.5
12.5/2 = 6.25

5. Moved to homework & Learning section

6. ## The Following 2 Users Say Thank You to NextGen1 For This Useful Post:

7. Originally Posted by Disturbed
........
Originally Posted by jeremy6996
..............
6.25 Grams of parent material left.

How? Half life of a radioactive material is x. Meaning, every x years the amount of radioactivity will have dropped by 50%.
So it's done in 20,000\5,000 cycles.

Code:
```100/2 = 50
50/2 = 25
25/2 = 12.5
12.5/2 = 6.25
6.25 = parent material left after 20,000 years.```
See where this is going?

100 - Parent material left = daughter material.

8. ## The Following User Says Thank You to Disturbed For This Useful Post:

9. basically, there are 4 half lifes going on here thus:

100/2=50/2=25/2=12.5/2=6.25

parent: 6.25
daugther: 92.75g

though i might have mixed up he two, I haven't done half-lives in a while, I'm on molarity right now.

10. Originally Posted by Sinner99
umm lol why r u guys talking bout school
This is the Homework and Learning Section that's why.

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