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The metal tungsten crystallizes in a body centered cubic unit cell with one atom per lattice point. When x-rays with wavelength 0.7107 A are used, the second order Bragg reflection from a set of parallel planes in a(n) tungsten crystal is observed at an angle of 12.98 (degrees). If the spacing between these planes corresponds to the unit cell length (d=a), calculate the radius of a(n) tungsten atom.
K = 0.040 for the reaction below at 450C. If the reaction starts with .20M Cl2 and .20M PCl3 what concentration of PCl5 will be present at equilibrium PCl5(g) PCl3(g) + Cl2(g)
If the original sodium tartrate solution had a concentration of 1.00 M instead of 0.100 M, what would the concentration of copper be in a solution created by combining 10 mL of it with 10 mL of the 0.100 M copper (II) sulfate solution.
A reaction has an activation energy of 110 kJ/mol and a rate constant, k=1.2 x 10^-12 s-1 at 0?C. At what temperature will the rate constant k=5.1 x 10^-7 s-1
A solution of glycerol in 701 g of water has a boiling point of 103.8 C at a pressure of 760 mm Hg. What is the mass of the glycerol in the solution?
For what signs of ?H and ?S will a process be spontaneous at high temperatures but not at low temperatures? not be spontaneous at any temperatures
draw the molecule 1-(4-methoxyphenyl)-2-methylpropan-1-ol. number the carbons on the molecule and identify all the functional groups characterized by the molecules name.
why is it that when kcl is dissolved water condenses on the outside of the beaker. Also, is condensation exothermic or endothermic
What is the molarity of your NaOH solution? 2) You are given an impure sample of oxalic acid dihydrate (MW=126.068 g/mole) and asked to determine the percent of oxalic acid dihydrate present in the sample.
What maximum length of aluminum foil can be made from 1.10 kg of aluminum?
Activating effects question: Using resonance contributors, explain why the nitrile group is a deactivator and a meta director in electrophilic aromatic substitution. A drawing would be helpful too.
A certain reaction has an activation energy of 63.62 kJ/mol. At what Kelvin temperature will the reaction proceed 4.50 times faster than it did at 347 K
Given the following substances and their melting points, hydrogen, -259 degrees Celsius, ethyl alcohol, -114 degrees Celsius, water, 0 degrees Celsius, sucrose, 186 degrees Celsius, and calcium chloride, 772 degrees Celsius
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