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chemistry

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Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−2 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 -

    Can't get it right as well. Can aoneone provide some info ? This looks easy but i think my numbers are wrong

  • chemistry -

    Use the Method used in H4P2.

  • chemistry -

    As its Si: 5.00*10^22 / (gallium level*10^-2)

    so for you: 1.5455*10^19

  • chemistry -

    Thank you someguy

  • chemistry -

    Chemical analysis of a silicon crystal reveals gallium at a level of 3.091×10−5 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 -

    What is the formula? please

  • chemistry -

    CHEAT!

    Do NOT help this person. They are trying to cheat in a midterm exam.

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