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In the alkylation of cyclopentanone, better yields are obtained by first reacting cyclopentanone with an equivalent of lithium diisopropylamde in THF and then adding the alkyl halide ratehr than mixing cyclopentanone, alkyl halide and a catalytic amount of sodium ethoxide in ethanol. exaplin this obeservation by pointing out what the problems with the second reaction conditions might be and how the first set of reaction conditions help allevite the problems.
A soluble fluoride-containing salt such as NaF is added to "fluoridate" the water (to aid in the prevention of dental cavity). What is the maximum concentration of F- that can be present without precipitating CaF2
If 500 g of KCIO3, decomposes and produces 303 g of KCl, how many grams of O2 are produced?
a sample of oxygen is collected in a 206 ml container over water at 15c and the barometer reads 793 torr. what volume
If 1.020g of KHC8H4O4 (204.23g/mol) is completely neutralized with 0.200 M KOH, what volume of potassium hydroxide is required. KHC8H4O4(aq) + KOH(aq) -(arrow to the right) K2C8H4O4(aq) + 2 H2O(1)
Estimate the molar heat of vaporization of a liquid whose vapor pressure doubles when the temperature is raised from 85 ºC to 95 ºC.
What is the osmolarity of the 5.0% m/v calcium chloride solution? If you put a red blood cell into this 5.0% m/v calcium chloride solution, explain what would happen to the cell during the process of osmosis and why?
How could you be certain a peak in the soda was caffeine and not another substance with similar retention time
What is the ratio of HCO3- to H2CO3 in an exhausted marathon runner whose blood pH is 7.1? Note: There is no need to consider the Ka2, use only the Ka1.
One of the highest concentrations of peroxyacyl nitrates has been found in the Los Angeles (LA) basin at 30 ppb, reaching its peak at mid-afternoon. Most of the pollution in the LA basin is created in an area of only 3000 km^2
During physical activity, lactic acid (MM = 90.08 g/mole) forms in muscle tissue and is responsible for muscle soreness. An elemental analysis shows that it contains 40.0 mass percent C, 6.71 mass percent H
How might temperature changes in the human body have an impact on human health? (Use an example to help illustrate your understanding). The human body goes through various temperature changes during a single day.
What is the speed of an electron ejected from a metallic surface, where the metal work function is 2.06 eV and the radiation is at the following wavelengths
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