please solve both within 30 minutes

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answerhappygod
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please solve both within 30 minutes

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please solve both within 30 minutes
Please Solve Both Within 30 Minutes 1
Please Solve Both Within 30 Minutes 1 (37.69 KiB) Viewed 99 times
The mixed metal oxide catalyst CexZr(1-x)O2 forms a solid solution and has a unit cell length of a=5.25 Å. What is its exact composition? (Lattice parameter for CeO2 = a=5.418 Å and ZrO2 = a=5.135 Å). The diffraction pattern of a material has the first 3 diffraction lines at 19.4174, 27.5951 and 33.9664 (20°). Cu Ka radiation was used with a wavelength of 1.5418 Å in the data collection. Index the first 3 diffraction lines and calculate the lattice parameter of the unknown material.
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