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Which reagents would you select to synthesize 2-bromo-3-methylbutane from 2-bromo-2-methylbutane? a) (1) NaOEt in EtOH, and (2) HBr b) (1) NaOEt in EtOH, and (2) HBr in presence of ROOR c) (1) KOC(CH3)3 in t-BuOH, and (2) HBr in presence of ROOR d) (1) KOC(CH3)3 in t-BuOH, and (2) HBr
Calculate the change in temperature for 4.5g of CaCl2 dissolved in 90.0mL of H20. Assume that calorimeter absorbs no heat. (Ccal=0)
Referring to the line representation, is the cell reaction spontaneus or non-spontaneous? Explain your answer.
Which of the following is a buffer?
For organic chemistry, what is a concerted shift? how do things like acids or heat affect them? what other factors effect them?
A student collected hydrogen in a eudiometer as described above. Barometric pressure is 765.5 Torr, the vapor pressure of water is 22.0 Torr at this temperature and the solution remaining in the eudiometer is 5.75 cm above the water in the beaker
Calculate the hydrogen-ion concentration [H+] for the aqueous solution in which [OH-] is 1 x 10-11 mol/L. Is this solution acididc, basic, or neutral?
A reaction is followed and found to have a rate constant of 3.36 x 10^4 M-1S-1 at 344 K and a rate constant of 7.69 M-1s-1 at 219K. Determine the activation energy for this reaction"
Calculate the heat that must be supplied to 0.104g of Ne(g) at 0.250 atm to raise its temperature from 22.0 degree Celsius to 60.0 degree Celsius at
What volume of 2.0 M NaClO must be diluted with water to prepare 500.0 mL of 0.10 M NaClO?
The sodium emission intensity from the diluted sample is 0.092. The calibration curve for sodium is INa = 0.083 L.mg-1 [Na] + 0.001. What is the concentration of Na in the diluted carrot solution? What is the concentration of Na in the concentrate..
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
the electron configuration [Kr]4d10 5s2? How many unpaired electrons are there in the ground state of this ion?
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