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Draw all stereoisomers of pentane-1,2,3,4,5-pentaol. You should find two meso structures and one pair of enantiomers. Use bold and hashed wedges to show the stereochemistry.
hemeagglutinin (HA) for sialic acid is low, Kd of ~ 5nM, how can efficient attachment occur with such a low affinity interaction?
Calculate the pH of a buffer that contains 0.270 M hydrofluoric acid (HF) and 0.180 M cesium fluoride (CsF). The Ka of hydrofluoric acid is 6.80 x 10^-4.
a 20.0-ml sample of 0.400 m hbr solution is titrated with 0.400 m naoh solution. calculate the ph of the solution after
how many grams of solid NaOCl must be added to 50 mL of .14 molar HOCl to obtain a buffer solution with a pH of 7.49.
Tetradecane and hexadecane were separated in a capillary column, with retention times of 3.529 and 6.955 minutes and base widths (Wb) of 58s and 1.4 min, respectively. An un-retained air peak occurs at 30s. Calculate the column resolution and the ..
Find the expression for the reversible pressure-volume work of an isothermal van der Waals gas with a constant number of moles (integrate the expression fully from Vi to Vf) (b) One mole of a gas at 300 K is compressed isothermally and reversibly ..
C(s)+CO2(g)_2CO(g) ?H°=119.8KJ. Now after each change below, write an R if you believe the reaction will go to the right and an L if it shifts to the left.
Explain how and why Carbon can experience, sp, sp2, and sp3 via hybridization and what role this plays in the geometry of the molecule.
A cook wants to heat 1.89 kg of water from 31.0 C to 100.0 C If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn? Natural gas produces 49.3 kJ of heat per gram. (For the sake ..
Three bulbs are connected by tubing, and the tubing is evacuated. The volume of the tubing is 35.0 mL. The first bulb has a volume of 35.0 mL and contains 8.84 atm of argon, the second bulb has a volume of 250 mL and contains 2.18 atm of neon
what spontaneous reaction will occur in aqueous solution among the ions Sn4+, Sn2+, Co3+, and Co2+ ? What will be the E°cell for this reaction?
Would you expect a carboxylic acid group within the water-free interior of a protein to have a higher or lower Ka than it would have if it occured on the protein's surface, where it is hydrated
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