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Glutamine, glycine, aspartic acid, threonine, isoleucine and arginine form a hexapeptide. What would be the overall charge of this peptide at pH 1?
A 0.01M solution of acid HAS, has a ka=1.6 x 10-10 and a concentration of NaAS of 1.29 x 10-3 molar; (a) what is the pH of this solution and (b) what is the pkb of the conjugate base of HAS
A certain atom has a doubly degenerate ground level pair and an upper level of four degenerate states at 450 cm?1 above the ground level. In an atomic beam study of the atoms it was observed that 30 per cent of the atoms were in the upper level
Five potential structures belonging to point groups Oh,D3h,D6h,D2h and D3d. Sketch geometries that are consistent with the possible point groups?
Calculate the percent compostion of impure benzoic acid. The orignial weight of benzoic mixture was 4.23 g
2.70 mol of mn2o3 reacted with 2.60 mol of carbonmn2o3 3c rarr 2mn 3cocalculate the number of moles of carbon
For a 0.25M solution of HF: a) Write the ionization equation, b) What will be the concentration of all species present, excluding water, when the reaction is at equilibrium?, c) What will be the pH, d) what will be the percent ionization
using a solution contains the ions pb2 ag and ni2. dilute solutions of sodium chloridenacl sodium sulfatena2so4 and
Calculate the percent yield for a student who completed experiment 27A and collected the following data. Give your answer to two decimal places.
Chemical Structure and Hydrogen Bonds in Base Pairs, Draw the chemical structure of a correctly base paired G-C pair, then re-draw the pair with a propeller twist these answers should all be on one page following box G.
Fish produce glycerol to survive the freezing waters of the Arctic. Determine the degree to which the freezing point of blood and other biological fluids is lowered with the help of glycerol. What is the ideal concentration range of glycerol requi..
A researcher suspects that the pressure gauge on a 49.9-L gas cylinder containing nitric oxide is broken. An empty gas cylinder weighs 135 lb. The weight of the partially full cylinder is 164.2 lb.
A gaseous mixture containing 0.160 mol fraction of carbon tetrachloride (CCl4) and 0.840 mol fraction of dry air is initially at 57.0°C and 1133 mmHg. If this mixture is cooled at a constant pressure, at what temperature does the CCl4 first start ..
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