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A Fraunhofer diffraction pattern is produced from a light sourced of wavelength 580 nm. The light goes through a single slit and onto a screen 1.0 m away. The first dark fringe is 5.0 mm from the central bright fringe. What is the slit width? (1nm=10^-9 m)
A solution containing copper(I), nickel, and zinc cyanide complexes was electrolyzed, and a deposit of .175 grams was obtained. The deposit contained 72.8 % Cu,4.30%Ni, and 22.9 % Zn. No other element or compund was released.
All molecular compounds may have London, dipole-dipole, and hydrogen-bonding intermolecular forces affecting their physical and chemical properties.
Histidine has three ionisable functional groups. Write the equilibrium equations for its three ionizations and assign the proper pKa for each ionization.
Microorganisms reduce carbonyl compounds to alochols stereoselectively. 5-chloro-2-pentanone is reduced to (S)-5-chloro-2-pentanol in this way. Distillation of this alcohol over sodium hydride gives a chiral cyclic ether.
How many liters of oxygen are needed to exactly react with 19.8 g of methane at STP?
Describe and explain how each of the following experimental errors or variations might affect your results.
Calculate the percent yield of this reaction? 4. Calculate the Atomic economy and Experiment Atomic economy? 5. Calculate E-product
given the balanced equation representing a reacction2c2h67o24co26h2odetermine the total number of moles of oxygen that
If 155 of wet is collected over water at 24 and a barometric pressure of 738 , how many grams of have been consumed? (The vapor pressure of water is 22.38 .)
For the following gaseous rxn, if the system is heated and compressed, which way will it shift to restore. What would be the expected shift in equilibrium
a 738 ml sample of nitrogen n2 was collected by displacement of water at 24c under a total barometric pressure of 1270
Calculate the concentrations of C2H2O4, C2HO4, C2O42-, and H+ ions in a 0.19 M oxalic acid solution.
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