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N-Acetylglutamic acid is an important regulatory molecule for the urea cycle. Assuming that N-acetylation of the amino group has no effect on the pKa values for the carboxylates, what is the pI for the N-acetylglutamate. For glutamic acid, pKa-COOH = 2.19, pKa-amino group = 9.67, and pKR = 4.25. A. pI < 1.2 B. pI = 3.2 C. pI = 5.9 D. pI = 7.0 E. pI = 9.7
a race car is traveling in a clockwise direction around a circular track with a constant speed of 200 kmhr. if is at
50.0 ml of 0.987 M HCl was mixed with 50.0 ml of 1.02 M NaOH, the heat of neutralization was calculated to be -2.7 kJ. What is the enthalpy (molar heat) of neutralization?
The formation constant Kf for the complex ion Zn(OH)42- is 2.8 1015. What is the concentration of zinc ion, Zn2+, in a solution that is initially 0.50 M in Zn(OH)42-
A beaker with 100 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.60 mL of a 0.380 HCl solution to the beaker. How much will the pH c..
A proton in a linear accelerator has a de Broglie wavelength of 143 pm. What is the speed of the proton?
Sucrose, C12H22O11, reacts slowly with water in the presence of an acid to form two other sugars, glucose and fructose, both of which have the same molecular formulas, but different structures. C12H22O11 + H2O ? C6H12O6 (glucose) + C6H12O6 (fructo..
nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.14% g/ml. How much of the concentrated stock solution in milliliters should you use to make 2.5L of 0.500 M HNO3.
Use the data below to answer the questions. Substance Delta HF kJ/mol) C(g) 718.4 CF_4(g) -679.9 CH_4(g) -74.8 H(g) 217.94 HF(g) -268.61 Keep in mind that the enthalpy of formation of an element in its standard state is zero
Give at least 3 reasons why sulfonylamide diuretics such as 'Furosemide' do not possess antibiotic activity?
Ethylene glycol, HOCH2CH2OH, is effective as an antifreeze, but it also raises the boiling temperature of automobile coolant, which helps prevent loss of coolant when the weather is hot. a. What is the freezing point of a 50.0% solution of ethylen..
Given that mercury has a Hvap of 59.11 kJ/mol and its normal boiling point is 356.7°C, calculate the vapor pressure in mm Hg at room temperature, 25°C.
What would you expect the differene between reactivity of the following pair? hexane and cyclohexene
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