Chemistry
The answer 1.598e14 was not right for me too. Any ideas what happen and how to write it out?
Chemistry
Chemical analysis of a silicon crystal reveals gallium at a level of 3.091X10^-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 cr...
Chemistry
Thank you alex and babalovic for B)and anonim for A)
Chemistry
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 obse...
Chemistry
Thank you anonymous
Chemistry
The diffusion coefficient of silver (Ag) in copper (Cu) has the following values: T (K) D (m2s-1) 923 5.42 x 10-16 1173 1.34 x 10-13 (a) Calculate the activation energy for diffusion of silver in copper. Express your answer in units of J/mol. (b) You have two specimens of copp...
Chemistry
Thank you Anonymous and Anonima
Chemistry
The glass panels of a sky roof need to be coated in order to screen out ultraviolet radiation (10-400 nm wavelength) but without color distortion in the visible spectrum. Candidate coating materials are gallium nitride (GaN) with a band gap,Eg, of 3.2 eV, or gallium arsenide (...
Chemistry
Thank you qwerty, Rufus for A)IV and Anonymous for B) VI
Chemistry
Odesa, the answer for b is VI) [1-2 2-] and thank you anonymous.
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