Cambridge Chemistry Challenge

Nope been stuck for hours...

Got through Entry, Copper, Silver and Gold and am now stuck on Rg.....This is annoying because we definitely haven't covered the stuff that people have been mentioning (what is hypergeometric distribution? ) any help would be much appreciated!

I don't think you need hypergeometric distribution. I think it's just binomial. My stats isn't very good so I couldn't do it.

Yeah, mine isn't very good either! I'm trying to go about it differently now. I looked up the abundance of nitrogen-15, and am currently trying a probability tree

Binomial probability is what you need! Don't give up- this one really is annoyingly tricky until you (well, at least kind of) know what you're doing.

Yeah, I've just got it (finally!!!) 125th

Yeah, I've just got it (finally!!!) 125th

4 hours on and Rg is still a big question mark.

7h just for rg question and still nothing

I totally understand. It's maddening! I feel like giving up but I don't want to.

Any hints for Gold - i have found the specific heat of fusion of the wax but now what do i do?

After you find the specific heat of fusion (L), you use the formula,
Q=mL. Mass is already mentioned and your answer's ready!

Thanks Done it! RG....

Congratulations! Have you figured out Rg? Help, please.

can anyone seriously help on Rg....I'm so stuck and frustrated just putting in random numbers now

On it now...but haven't figured it out!

Did you get Rg yet? Could I please get some help?

Finished! Rg is very complicated and involves a lot of trial and error...

Did you get Rg yet? Could I please get some help?