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What length of mirror drive in a Michelson interferometer is required to produce a resolution sufficient to separate
a) infrared peaks at 500.6 and 500.4 cm-1?
b) infrared peaks at 4002.1 and 4008.8 cm-1?
Compare the pH vs volume curve for HCL and acetic acid. discuss any difference in the shape of the curves. Compare theese two curves to one of the curves prepared for the unknow
The mass of an ice cube is 18.7 g, and its initial tempature is -14.4 degree C. The water resulting from the melted ice reaches the tempature of your skin,
Generate the equilibrium constant expressions for the following reaction. Calculate the numerical value for
a nitrogen fertilizer that is manufactured from ammonia and carbon dioxide. 2 NH3(g) CO2(g) ? NH2CONH2(aq) H2O(l) What volume of ammonia at 45°C and 1.60 atm is needed to produce 908 g (2 lb) of urea?
why zinc and magnesium good sacrificial anodes for pipeline,but lead and tin will not be good? what would happen to pipeline protected by lead sacrificial anodes,and why?
How many carbon dioxide molecules are generated by the combustion of one molecule of hexane (C7H14) in ample oxygen?
prepared in good yield as the exclusive product of hydration of an alkyne with water, SO4 and Hg to form ketone
Outline a complete mechanistic sequencefor the reaction of 2-bromobutane with potasium2-methyl-2-propoxide in 2-methyl-2-propanol solvent to form the three alkenes generated in the reaction
a particular amino acid in an ion exchange chromatogra phy column. What is the peak width after the amino acid has migrated 100 cm?
The half-life for the radioactive decay of U-238 is 4.5 billion years and is independent of initial concentration. How long will it take for 10% of the U-238 atoms in a sample of U-238 to decay?
A stock solution is prepared by adding 24 mL of 0.4 M Na3PO4 to enough water to make 76 mL. What is the PO43- concentration of 25 mL of the stock solution
Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic weight of copper to determine the mass of the other copper isotope. Express your answer using four significant figures
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