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Sickle-cell anemia is a genetic defect whereby a person's red blood cell assumes a sickle-cell shape. This genetic defect involves the substitution of valine for glutamic acid at position six of the β-globin chain of hemoglobin. To understand how this can produce a defective red blood cell, you must be able to recognize the structural differences between valine and glutamic acid. How does the structural difference between valine and glutamic lead to the improper folding of the hemoglobin protein?
The freezing point depression of water is a rather small 1.86 deg C kg/mol. Addition of 0.454 g of zinc chloride to 3.33 g of water lowers the melting point by 5.2 deg C. Calculate the expected melting point for this mixture and account for any di..
How many electrons has a titanium atom lose if it has formed the ion Ti^4+. What are the total number of protons and electrons in a Ti^4+ ion
If both enzymes catalyze their reaction with similar rates, explain why the hydrolysis of the starch molecule is accelerated when both enzymes act together.
what is the major product when you react cis and trans 1 broom 2-t-butyl with CH3CH2ONa and CH3CH2OH and which one is fastest and why
the burning of ethane produces both co2 and h2o. if 200 ml of co2 is produced at 20degc and 750 torr what volume of
The rate constant for the second- order reaction.starting with a concentration of 0.86m, calculate the concentration of NOBr after 57s.
Rank the fluorine species from most to least stable. To rank items as equivalent, overlap them.
Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases
If a solution containing 61.402 g of mercury(II) perchlorate is allowed to react completely with a solution containing 17.796 g of sodium sulfate, how many grams of solid precipitate will be formed?
Problem- The molar heat capacity of silver is 25.35 J/mol??C. How much energy would it take to raise the temperature of 11.8gof silver by 12.2?C
Problem- The carboxylic acid, chloroacetic acid (ClCH2COOH), has a pKa of 2.87. What is the pH of a 2.55 M concentration of this solution
Calculate the mass/volume percent, % (m/v), for the solute in each of the following solutions. Express the answer using 2 sig figures.
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