Homework Help: chemistry

Posted by sofia on Friday, December 14, 2012 at 6:37am.

Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−8 atomic percent. Assuming that the concentration of thermally excited charge carriers from the Si matrix is negligible, what is the density of free charge carriers (free carriers/cm3) in this Si crystal?

chemistry - MIT, Friday, December 14, 2012 at 11:12am
You are not allowed to post answers to exam problems. Collaboration of any form is strictly
forbidden in the midterms and the ﬁnal exams.
chemistry - MIT2, Saturday, December 15, 2012 at 5:04am
And I really hope that you and the other cheaters get kicked off the course. You deserve to be.
chemistry - Odesa, Saturday, December 15, 2012 at 6:04am
(6.023*10^23)/(12.05)=m
m*(3.091*10^-8)*(10^-2)=

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