Homework Help: chemistry

Posted by vanesa on Friday, December 14, 2012 at 7:07am.

You are conducting experiments with your x-ray diffractometer.
(a) A specimen of molybdenum is exposed to a beam of monochromatic x-rays of wavelength set by the Kα line of silver. Calculate the value of the smallest Bragg angle, θhkl, at which you can expect to observe reflections from the molybdenum specimen.
DATA:
λKα of Mo = 0.721 Å
lattice constant of Mo, a = 3.15 Å
λKα of Ag = 0.561 Å
lattice constant of Ag, a = 4.09 Å
unanswered
(b) If you wish to repeat the experiment described in part (a) but using an electron diffractometer, across what vale of potential difference must electrons be accelerated from rest in order to give the identical value for the smallest Bragg angle, θhkl?
unanswered

chemistry - Antonio, Friday, December 14, 2012 at 6:16pm
hi, I'm one of the community TA for 3.091x. Please stop cheating, it's quite silly.
chemistry - Odesa, Friday, December 14, 2012 at 9:57pm
a) 7.23
b) 475 ev
chemistry - MIT2, Saturday, December 15, 2012 at 5:46am
Odesa, why are you helping people to cheat?
chemistry - Odesa, Saturday, December 15, 2012 at 12:20pm
how do I believe you?
chemistry - Anonymous, Sunday, December 16, 2012 at 4:50am
please odesa tell me because they are not suppose to be here if they know it all
chemistry - XXX, Sunday, December 16, 2012 at 10:33am
Odesa, like to help each other to cheat because he/she like to be cheated... Hahaha

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