no artical shoul be used here
Answer:
The answer is "0.147 nm and 99.63 mol %"
Explanation:
In point (a):
![\to nk1 = 062](https://tex.z-dn.net/?f=%5Cto%20nk1%20%3D%20062)
![\theta =37.21^{\circ}](https://tex.z-dn.net/?f=%5Ctheta%20%3D37.21%5E%7B%5Ccirc%7D)
![2 \theta = 74.42^{\circ}](https://tex.z-dn.net/?f=2%20%5Ctheta%20%3D%2074.42%5E%7B%5Ccirc%7D)
![\to \lambda = 0.1790 nm](https://tex.z-dn.net/?f=%5Cto%20%5Clambda%20%3D%200.1790%20nm)
find:
d(062)=?
formula:
![\to nx = 2d \sin \theta](https://tex.z-dn.net/?f=%5Cto%20nx%20%3D%202d%20%5Csin%20%20%5Ctheta)
![\to d(062) = \frac{1 \times 0.1790^{\circ}}{2 \times \sin 37.21^{\circ}}\\](https://tex.z-dn.net/?f=%5Cto%20%20d%28062%29%20%3D%20%5Cfrac%7B1%20%5Ctimes%200.1790%5E%7B%5Ccirc%7D%7D%7B2%20%5Ctimes%20%5Csin%2037.21%5E%7B%5Ccirc%7D%7D%5C%5C)
![= \frac{0.1790^{\circ}}{2 \times 0.604738126}\\\\= \frac{0.29599589}{2}\\\\= 0.147 \\](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B0.1790%5E%7B%5Ccirc%7D%7D%7B2%20%5Ctimes%200.604738126%7D%5C%5C%5C%5C%3D%20%5Cfrac%7B0.29599589%7D%7B2%7D%5C%5C%5C%5C%3D%200.147%20%5C%5C)
In point (b):
![\to Mg_2SiO_4\longleftrightarrow Fe_2SiO_4](https://tex.z-dn.net/?f=%5Cto%20Mg_2SiO_4%5Clongleftrightarrow%20%20Fe_2SiO_4)
![d= 0.14774 \ \ \ \ \ olivine = 0.147 \ \ \ \ \ 0.15153](https://tex.z-dn.net/?f=d%3D%200.14774%20%20%5C%20%5C%20%5C%20%5C%20%5C%20olivine%20%3D%200.147%20%5C%20%5C%20%5C%20%5C%20%20%5C%200.15153)
formula:
![\to d=\frac{a}{\sqrt{n^2+k^2+i^2}}\\](https://tex.z-dn.net/?f=%5Cto%20d%3D%5Cfrac%7Ba%7D%7B%5Csqrt%7Bn%5E2%2Bk%5E2%2Bi%5E2%7D%7D%5C%5C)
that's why the composition value equal to 99.63 %
Answer:
While scientists study how nature works, engineers create new things, such as products, websites, environments, and experiences. Because engineers and scientists have different objectives, they follow different processes in their work.
Explanation:
Answer:
Dr. Engelbart, who would later help develop the computer mouse and other personal computing technologies, theorized that as electronic circuits were made smaller, their components would get faster, require less power and become cheaper to produce — all at an accelerating pace