radioactive decay problems:
(see attached file)

Question

radioactive decay problems: 
(see attached file)

anonymous · Answer

attachment

vincent-lyon.fr · Answer

Well, what do YOU think?

OS is not here to solve problems for you.
Try to do something on your own then we can help you.

anonymous · Answer

oh trust me, i've tried. i'm not going to upload my work...

myininaya · Answer

@kryten Please explain your answer. It is against the CoC to just give the answer. @Vincent-Lyon.Fr maybe you can give a hint instead. @thejoshfish I hope that you know that just seeking the answer is against our CoC. I'm not saying that is what you are doing here. I don't know how hard these type of questions are. The main thing is for everyone to work together but I would like to the see the person asking the questions actually answer the question. You know come up with the final conclusion. Maybe everyone else can put their strategy for getting an answer like this. Does everyone understand? By the way here is the CoC http://openstudy.com/code-of-conduct

anonymous · Answer

myininaya there isnt much to explain the answer is self explainatory... realy dont know what else to explain...
take periodic table and add and supstract numbers, so you cant explain a lot...