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Which of the following below applies to the addition of nucleophiles toalpha, beta-unsaturated carbonyl compounds?
1) The nucleophile can attack either at the carbonyl C atom or else at the beta C atom as both of these have a partial positive charge.
2) Nucleophilic attack at the beta C atom will defer the so-called Michael addition product.
3) Both 1 and 2.
4) Neither 1 nor 2.
Explain the solubility of KNO3 is 155 g per 100 g of water at 75 degree Celsius, and 38.0 g at 25 degree Celsius. Explain what mass (in grams) ofKNO3 will crystallize out of solution if exactly 100 g of its saturated solution at 75 degree Celsius ..
what is the final ph of, a solution of 30ml of .2 m formate titrated with 25 mL of .24M HCL Kb for formate = 5.6*10^-11
the percentage of se in peroxidase anhydrous enzyme is 0.5 by weight atomic weight 78.4. then minimum molecular weight
Use bond enthalpies to estimate the enthalpy change for the following gas-phase reaction.
If the enthalpy of combustion of the compound is -2978.0 kJ/mol and the temperature of the calorimeter rises from 25.44 C to 27.7 C, how many moles of the compound were oxidized?
How many milliliters of a 0.40% (w/v) solution of nalorphine must be injected to obtain a dose of 1.5mg
a series of solutions were prepared each containing exactly one mole of water mw 18.015 and varying amounts of acetone
Thyroxine, an important hormone that controls the rate of metabolism in the body, can be isolated from the thyroid gland. If 0.455 g of thyroxine is dissolved in 10.0 g of benzene, the freezing point of the solution could be measured as 5.144oC.
Explain what is the wavelength of light in centimeters having a frequency of 1.5x10^18 s^-1? The speed of light is 3.00 x 108 m/s
What is the pH of a solution to which 35.0 ml of .20 M HCl and 50.0 ml of .42M NaOH have been combined
Magnesium can be obtained by precipitating Mg^2+ as Mg(OH)2(s). The Ksp of Mg(OH)2 is 6.0*10^-10. The magnesium ion concentration is 0.059M. If a sample of solution is treated so its [OH-] concentration is maintained at 2.0*10^-3M
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.200 M sodium benzoate. How much of each solution should be mixed to prepare this buffer
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