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HELP! Chemistry Question!!! (1 Viewer)

Oobadoo

Member
Joined
Nov 22, 2009
Messages
63
Gender
Male
HSC
2011
I am doing an assignment on copper and aluminium, its really quite easy. However, I need to know what the crustal percentage of copper is, or the crustal abundance if you like. Most sources say 60 parts per million roughly, which is 0.00006 % (NASA says 0.00007). BUT virtually every othersource is simultaneously saying that the percentage of copper by weight is 0.0058 %!!!!! Does anyone know which one to go with???

(If the answer is terribly obvious I must have had a mental colapse and I apologise) :D
 

nat_doc

Member
Joined
May 17, 2010
Messages
83
Gender
Female
HSC
2010
go with Nasa. it really doesn't matter... as long as you acknowledge it in ur biblio, then ur correct
 

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