Determine the angle of the first-order diffraction
X rays diffract from the crystal in which the spacing among atomic planes is around 0.171 nm. The second-order diffraction takes place at 41.0 degrees. Determine the angle of the first-order diffraction?
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When using TLC plates how you do pick out the best solvent? For example: Match the appropriate solvent out of ethylene chloride, hexane, and acetone for each of the following: 2-phenylethanol, bromobenzene, acetophenone, benzoic acid, and the 2,4
If other factors are held constant, determine the effect of increasing the sample variance?
Such a star could be thought of as a huge atomic nucleus. When a star of mass of around 1.4 x 1.99 x 10^30 kg collapsed into neutrons (mn = 1.67 x 10^-27 kg), determine what would its radius be? (Suppose that r = r0 {A^1/3}.)
Two samples from the same population both have n = 10 scores with M = 45. If the t statistic is computed for each sample, then what is the relationship between the two t values?
Why is nodiacetylferrocene produced in which both acetyl groups are on the same aromatic ring? In the formation of diacetylferrocence, the product is always the one in which each ring is monoacetylated.
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An electron confined in a 1-dimensional box is viewed, at different times, to encompass energies of 12 eV, 27 eV and 48 eV. Determine the minimal length of the box in nanometers?
Methyl Orange is an acid-base indicator. In dilute solution at ph greater than 4.4, it is yellow. Illustrate a structure of the species that is formed at the lower ph of the acid proton adds to the azo nitrogen atom adjacent to the aromatic ring c
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