Homework Help: chemistry

Posted by Anonychem on Saturday, January 12, 2013 at 4:16pm.

The silicon wafer is coated with a layer of metallic aluminum which acts as an electrical contact. The x-ray diffraction pattern of aluminum is measured in a diffractometer with Fe Kα radiation. At what angle, θ, do you expect to observe the first reflection of aluminum, i.e., the reflection at the lowest angle? Express your answer in degrees.

Please help!!

chemistry - Anonymous, Sunday, January 13, 2013 at 6:13am
13.2
chemistry - kaken, Sunday, January 13, 2013 at 7:50am
I got 24.5
chemistry - Anon, Saturday, June 1, 2013 at 9:59pm
They are BOTH wrong.
chemistry - Anonymous, Sunday, June 2, 2013 at 10:45am
wrong
chemistry - Anonymous, Sunday, June 2, 2013 at 10:48am
i found 8.87
chemistry - Anonymous, Sunday, June 2, 2013 at 3:47pm
8.87 is right. THANKS!

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