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Worksheet: Stoichiometry from Diffraction Data

Q1:

X-rays of wavelength 0.147 nm are diffracted by a crystal with a layer spacing of 3.94 Å. Calculate the diffraction angle πœƒ of the first-order reflection.

Q2:

When X-rays of wavelength 0.1315 nm are diffracted by a crystal, the first-order reflection occurs at an angle πœƒ = 2 5 . 2 5 ∘ . Calculate to 3 significant figures the spacing of the crystal planes that give rise to this reflection.