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Alpha helices are a type of secondary structure in proteins. What is the length of a 25-kDa single-stranded ?-helical protein segment? Assume a mean residue mass of 110 Da.
If 30.00 mL of 0.500 M KOH are needed to neutralize 10.00 mL of HCl of unkown concentration, what is the molarity of the HCl
What is the % by mass of CaCl2.2H2O in the salt mixture B. how many grams of the excess reactant K2C2O4.H2O reacted in the mixture C. How many grams of the K2C2O4. H2O in the salt mixture remain unreacted
How many grams of sodium benzoate should be added to prepare the buffer? Neglect the small volume change that occurs when the sodium benzoate is added
For the table below, write which orbital goes with the quantum numbers. Don't worry about x, y, z subscripts. If the quantum numbers are not allowed, write "not allowed."
Trifluoroiodomethane, CF3-I, undergoes free radical addition to alkenes. Explain the fact that the free-radical addition of this compound to 2-methyl-2-butene is faster than its addition to 1-pentene.
the average kinetic energy of xenon and nitrogen gases is the same at the same abosolute temperature?
Choose the correct equation for the standard enthalpy of formation of CO(g), where change Hf for CO= -110.5kJ/mol? (gr indicates graphite)
How should the two heats of reactions for the neutralization of NaOH and the two acids compare? Why?
If 3.0 Ml of distilled water is added to 2.0 ml of 0.35M CoCl2 solution, what is the concentration of the resulting solution.
If the crystal field splitting (Δo) is 3.44×10-19 J for a cobalt compound, what wavelength of light (in nm) is absorbed when an electron from a lower energy d orbital is promoted to a higher energy d orbital? What color will the cobalt compound ap..
What would the reaction: Bi + excess Cl2 yield? I know Bismuth can only attach to I think 3 chlorides because of the inert pair effect but I guess that's the part I'm unsure about! So would it be BiCl3
Copper has two naturally occurring isotopes,63Cu (isotopic mass 62.9396 amu) and 65Cu (isotopic mass 64.9278 amu). If copper has an atomic mass of 63.546 amu, what is the percent abundance of each isotope?
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