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A metal crystallizes in a body-centered unit cell with an edge length of 2.00 * 10^2 pm. Assume the atoms in the cell touch along the cube diagonal. The percentage of empty volume in the unit cell will be:
A) 0%B) 26.0%C) 32.0%D) 68.0%E) none of these
Determine the heats of formation or the steric energies of the exo- and endo-anhydride adducts using a molecular mechanics program.
Draw the reaction scheme (with arrows) of the Diels Alder rxn between maleic anhydride and furan. draw both the endo and exo adducts
The pI of alanine is 6.01. What percentage of the alanine in the solution is present as the anion. You may need to revisit the Henderson-Hasselbalch equation to solve this problem.
If the water initially has a temperature of 26 0C, how many kilojoules of heat must be removed to cool and freeze the water at 0 0C?
how does a water softener work chemically? What's better to drink tap water or bottle springwater and why?
how many moles of C3H8 need to react to release 5280 kJ of energy?
Why does an atomic emission measurement of concentration have more error associated with it than an atomic absorption
What is the de Broglie wavelength (in meters) of a baseball weighing 145 {g} and traveling at 159 km/h?
For each reaction between a ketone and an amine, draw the curved arrow(s) to show the first step of the mechanism, then draw the final organic product
at room temperature 20 milk turns sour in about 65 hours. in a refrigerator at 3 milk can be stored three times as long
Suppose that the gas-phase reaction A B and B A are both elementary processes with rate constants of 6.56e-02 s-1 and 3.51e-04 s-1, respectively
There are two carboxylic acid functions in 3-nitrophthalic acid. The pKa of the acid function is at the 2-position is approximately 2, whereas that at the 1- position is about 3. Which of the two is the more acidic and why
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