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A mutant hemoglobin has His146 of the beta chain replaced with a threonine residue. predict what the consequence of this mutation might be. specifically:
(A) would you expect a change in p50? If so, which way?
(B) would you expect a change in cooperativity? If so, which way?
(C) Would you expect a change in DPG binding? If so, which way?
(D) Would you expect the hemoglobin by electrophoresis at pH5? At pH 7?
If a car has an EPA mileage rating of 30 miles per gallon, What is this rating in km L-1? 1 liter = 1 dm3, 1 gallon = 3.785 liter, 1 mile = 1.609 km.
A stream of oxygen was passed at a rate of 20mL per minute at S.T.P. for 1 hour through a silent electric discharge followed by a gas-washing bottle containing aqueous ammonium iodide
Bromine can be obtained from the decomposition of calcium bromide by means of electrolysis. If 10.0 g of calcium bromide are dissolved in water
What is the theoretical yield of aspirin if 165 of salicylic acid is allowed to react with 111 of acetic anhydride?
Each 1.000 g of 238U that decays eventually produces 0.866 g of 206Pb. If the half-life of 238U is 4.468 x 10^9 years, what is the age of a mineral that has a 238U/206Pb mass ratio of 2.00?
prepare a schematic diagram of the work up procedure, including the column chromatography with acetylferrocene, diacetylferrocene, ferrocene
Suppose you have a sample of sodium weighing 11.42 g. How many atoms of sodium are present in the sample.
how many grams of methanol (CH3OH) is required to prepare a 0.112 m solution in 440 g of water? answer in units of g.
Suppose that coal of density 1.5 g/cm3 is pure carbon. (It is, in fact, much more complicated, but this is a reasonable first approximation.)
Water self ionizes to a small extent creating equal concentrations of hydronium and hydroxide ions. What is the molar concentration of these ions in water at 25oC.
Calculate the number of grams of KClO3 needed to make 400 mL of 0.913 M solution.
One mole of neon gas equals how many grams? Round to the nearest hundredth. Don't forget the units. Be sure to abbreviate the units.
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