Chemistry
posted by T on .
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−4 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?

Got the answer thanks anyway

How did you get the answer? or what is your answer?

what is value for silicon in gallium

Don't give an answer. Just explain step by step by inserting the data above into the formula. So we can understand how to answer.

This is a question from the second midterm of 3.091x by edx. Stop cheating, it's silly and pointless.

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