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Alpha helices are a kind of secondary structure in proteins. Explain what is the length of a 31-kDa single-stranded ?-helical protein segment? Presume a mean residue mass of 110 Da.
Calculate the wavelength of light required to remove an electron from a ground state hydrogen atom.
A heat-resistant polymer Nomex has a number-average molecular weight of 24,116. Hydrolysis of the polymer yields 39.31% by weight m-aminoaniline, 59.81% terphtalic acid and 0.88% benzoic acid. Compute the degree of polymerization and the extent of..
The solubility of barium hydroxide in water at 20 degrees Celsius is 1.85g/100 water. a solution is made up of 256 mg in 35.0 g of water. is the solution saturated. if not . how much more barium hydroxide needs to be added to make a saturated solu..
Why is I2 the limiting reactant in the form of SnI2. look at the redox potentials for all possible reactions.
In the decay series that starts with uranium-238, the first four steps consist of the emission of an alpha-particle, two beta-particles, and then another alpha-particle. What is the daughter isotope after the fourth emission
hydrochloric acid reacts with magnesium to produce hydrogen gas and magnesium chloride. reacting magnesium with excess
a 160.0g sample of metal at 75 degrees c is added to 150.0g h20 at 15 degrees c. the temp. of the h2o rises to 19.5
Calculate the cell potential for the following reaction as written at 75 °C, given that [Zn2 ] = 0.870 M and [Ni2 ] = 0.0130 M. The standard cell potential for the half reaction of Zn is 0.76 written as Zn (s) --> Zn2+ + 2e-
Describe how you expect to convert the intensities recorded by the spectrometer into energies.
Based on the number of chiral centers in Morphine, determine the maximum number of stereoisomers that are theoretically possible
The value of heat of reaction for the following reaction is -6535 kJ. What will the amount of heat in kJ evolved during the combustion of 13.1 grams of C6H6? The value of heat of reaction for the following reaction is -6535 kJ. What will the a..
A beaker with 130 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 7.20 mL of a 0.370 M HCl solution to the beaker. How much will the pH..
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