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1) Draw the mechanism for the crossed aldol condensation between 3-hexanone and benzaldehyde.
2) Draw a representation for TPCP that would represent itsstructure if the phenyls were perpendicular to the 5-membered ring(a paddle wheel structure) and a representation that represents the"propeller" structure is chiral. Is the paddle wheel structurechiral or achiral? How do you know?
The metal aluminum is made commercially from al2o3. what weight of Al goes 1.00kg of this metal oxide contain
List the similarities and differences between the classical - and - quantum-mechanical equations of motion. How does the latter account for the quantization of energy and wave-particle duality
Nitrogen gas when combined with hydrogen gas forms ammonia gas according to the following equation N2(g) + 3H2(g) = 2NH3(g). Delta H(rxn)=-56 kJ. The delta H(rxn) was determined using Hess's Law and the following three related reactions:
What is the maximum number of electrons that can be identified with each of the following sets of quantum numbers? In some cases, the answer may be "none."
Arrange the members of the following set of elements in order of increasing first ionization energies. (Use the drop down lists to indicate your choice, with 1 as the smallest IE and 6 as the largest IE.)
A solution is prepared by dissolving 49.3 g of of KBr in enough water to form 473 mkof solution. calculate the mass % in the soulutionif the density is 1.12 g/mL
A gaseous mixture of O2 and N2 contains 36.8% nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 685 mmHg.
Suggest a reason that TLC plates that are stored in a highly humid room result in different Rf values than plates that are stored in a dehumidified enviorment. Consider the structure of the layered material on the TLC plates and how that material ..
Benzene has a heat of vaporization of 30.72;{{rm{kJ}}}/{{rm{mol}}} and a normal boiling point of 80.1 ^circ {rm{C}}. At what temperature does benzene boil when the external pressure is 420 torr?
In HPLC, how often should I need to run standard with samples? Why? If the retention time is changed with real samples compared to standard
Place the following gases in order of increasing average molecular speed at 25°C. Ne, HBr, SO2, NF3, CO
A piece of metal of mass 27 g at 99?C is placed in a calorimeter containing 45.1 g of water at 21?C. The final temperature of the mixture is 38.7?C.
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