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X-Ray crystallography steps: -->N.B: X-ray crystallography can deteremine the 3D structure of a protein without prior knowledge of the a.a. sequence.N.B: knowledge of the primary structure makes fitting of the electron density map much easier.
Can someone describe what the sn1 and sn2 mechanisms are and the primary factors that effect why alkyl halides undergo one pathway over the other.
An excess of solid nickel hydroxide (Ni(OH)2) is added to a flask of water. Find [Ni+2] at equilibrium and find pH at equilibrium.
write separate oxidation and reduction half-reaction for the procedure used in the test for nitrate ions.
The compound produced a green flame when burnt and a white precipitate formed when ethanolic silver nitrate was added. In addition, a solution of chromic acid changed from an orange color to clear as a green precipitate formed when compound was ad..
A student determines the amount of tetrachlorethylene in a contaminated well water using a purge and trap technique. The student takes 150.0 mL of the well water, spikes the well water with 100 microlitres of 50 ng carbon tetrachloride/mL and purg..
Explain Hydrogen extracted from citric acid intermediates are loaded onto electron carriers (NAD+, FAD). Where do these hydrogens end up eventually
The heats of endothermic reactions are assumed the same as the heats of exothermic reactions, thus neglected for this estimation. The heat capacity of this woody biomass, 2.72 kJ/kg·?C, is assumed constant.
If the pH at the beginning of a titration was 4.25 and 9.60 at the equivalence point. What is the pH at the half equivalence point.
Include on the graph the boiling points of pure benzene and pure methanol and the boiling point of the azeotrope. Describe the behavior for a mixture that is initially rich in Benene (90%) and then for a mixture that is initially rich in methanol ..
heptapeptide upon HCL hydrolysis produced equimolar amounts of ASP, CYS, GLU, LYS, PHE, TYR, VAL and ammonia. Exposure of the intact heptapeptide to FDNB followed by hydrolysis produced DNP-VAL
Use the systematic treatment of equilibrium to determine the pH and concentrations of species in 1.00 L of solution containing 0.070 mol lysine (HL), 0.055 mol aspartic acid (H2A), and 0.0080 mol NaOH. Consider just acid-base chemistry.
Carbonic acid (H2CO3) solution, calcium hydroxide Ca(OH)2 solution, and a mixture of both were placed in three plastic cups. Explain which would be the most and least dangerous when brought into contact with the skin and why.
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