Potassium Iodide (chemical formula: KI) has a face-centered cubic structure (just like sodium chloride). If the distance between crystal planes is d = 0.353 nm and X-rays of wavelength ? = 0.0934 nm are used, what is the smallest angle ? at which a diffraction maximum may be obtained?
A. 9.92°
B. 7.60°
C. 13.3°
D. 15.5°
E. 6.52°
Answer: B
You might also like to view...
John can hit a golf ball 310. m on Earth. On the moon's surface, g = g earth, so how far could he hit the same ball if he could only achieve half the initial speed at the same angle as that achieved on Earth?
A) 1860. m B) 155. m C) 78. m D) 396. m E) 465. m
If the temperature of an ideal gas is increased from 20°C to 40°C, by what percent does the speed of the molecules increase?
A) 3% B) 30% C) 70% D) 100%
When viewing a seascape, what is a major difference in the effect of wearing polarizing sunglasses versus sunglasses that simply cut down on intensity?
What will be an ideal response?
Support a horizontal toothpick at both ends. Then do likewise for a log of the same kind of wood. There is more sag in the
A) toothpick. B) log. C) same in each