n structure I was converted to quinine (A), other compounds were formed, including compound D. Horo a) There are carbon stereocenters in structure D. Assign the R and S configuration at each stereocenter of D. b) The quinine isolated from this reaction was found to have a specific rotation of [a] =+35° (c = 1, CHC13). Following a chiral resolution...
Question 1 (2 points, 1 point for each correct answer) A research group discovered a new enzyme happyase that catalyzes chemical reaction SAD STUDENT HAPPY STUDENT Researchers characterized this enzyme and found that at [E,-10 nM this enzyme has Vmax at 2.5 μM/s. It was also experimentally measured that at [SAD STUDENT)-0.05 mM this enzyme has Vo -500 nM/s. What...
1. After filtering your final product, you find that your product is still wet, but you proceed to take a melting point anyways. The literature melting point of luminol is 319 °C. What do you expect the melting point of your luminol to be? What would you expect the yield to be? Would it be an accurate yield? 2. While...
Very stuck on this question so any help would be greatly
appreciated! The chapter in the textbook discusses
transesterification. Thank you!
3. Two students recrystallize crude methyl m-nitrobenzoate from ethanol instead of methanol. One has no problems and gets pure product mp 775-785°C. But for the other student, the product initially oils out instead of giving crystals. After a tremendous...
i need help in biochem Which of the following statements is true? Exonuclease III cleaves DNA in a sequence specific manner Bacteriophage lambda exonuclease adds homopolymer tails to the 3’ –OH ends of a linear duplex Alkaline phosphatase removes terminal phosphates Kinase removes nucleotides from 5‘ends (5 points) Arrange the following steps involved in Gene cloning in the correct order...
Organotin compounds play a significant role in diverse industrial applications. They have been used as plastic stabilizers and as pesticides or fungicides. One method used to prepare simple tetraalkylstannanes is the controlled direct reaction of liquid tin(IV) chloride with highly reactive trialkylaluminum compounds, such as liquid triethylaluminum (Al(C2H5)3). 3SnCl4 + 4Al(C2H5)3 --> 3Sn(C2H5)4 + 4AlCl3 In one experiment, 0.170 L...
Part 5 Finally, fill in the equilibrium concentrations: [A] (M) [B] (M) [C] (M) Initial 1.00 1.00 1.00 Change + 0.25 I+ 0.25 -0.50 Equilibrium Submit Anne Tries 0/99 Part 6 It is now possible to calculate K using the equilibriuri concentrations of A, B and C. K- Submit Answe Tries 0/99 In order to find the change in the...
In addition to mass balance, oxidation-reduction reactions must be balanced such that the number of electrons lost in the oxidation equals the number of electrons gained in the reduction. This balancing can be done by two methods: the half-reaction method or the oxidation number method. The half-reaction method balances the electrons lost in the oxidation half-reaction with the electrons gained...
In addition to mass balance, oxidation-reduction reactions must be balanced such that the number of electrons lost in the oxidation equals the number of electrons gained in the reduction. This balancing can be done by two methods: the half-reaction method or the oxidation number method. The half-reaction method balances the electrons lost in the oxidation half-reaction with the electrons gained...
please answer these
questions are based off the sheet with the short
procedure
Question 1 What are the two substances and their quantities (mass for solids, volumes and concentrations for solutions) placed in the calorimeter for Reaction A? Concentration (if Formula Amount (include units!) needed; write N/A for pure substances) Substance 1 Substance 2 D Question 2 What are the...