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What is meant by the primary structure of a protein molecule? How does it differ from the secondary structure of a protein? (2) How are secondary protein structures held together? (3) Discuss the importance of the tertiary and quaternary structures of proteins. Do all proteins have primary, secondary, tertiary, and quaternary structures? Explain.
Calculate the pH of a 500.0 mL solution containing 0.75 M HC3H5O3 (Ka = 1.4 x 10-4) and 0.25 M NaC3H5O3.
The 13C nucleus is a spin 1/2 particle, which means it can orient in two directions in a magnetic field (with the field and against it). The difference in energy between the two orientations is given by:
Assuming that the total pressure of the gases is 1.52 and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each gas.
Determine the molar heat capacity of a solid sample from the observation that transferring the sample with n = 2.45 mol from boiling water (at constant ambient pressure) into 232.0 g of water initially at 25.1ºC raised the water temperature to 33...
What is the nucleus with which an alpha particle can react to produce Lanthanum-133 plus four neutrons
Explain how you would carry out these two reactions and why you obtain the products you indicate
A KNO3 solution containing 45 g KNO3 per 100 g of water is cooled from 40 degrees C to 0 degrees C. What happens during cooling
Which of the following is a neutralization reaction?
Permanganate ion will oxidize Cr3+ in acidic solution to produce Mn2+ and what other product. The answer is dichromate, but why.
Consider the reaction that describes the Haber process for the production of ammonia: for which Kc at 300oC is 9.5. Calculate Kp for this reaction at 300oC.
2 n2o5g rarr 4 no2g o2gif the rate of disappearance of n2o5 is equal to 1.80 molmin at a particular moment what is the
A drop of NaOH titrant adheres to the side of the buret between the initial and final readings for the titration.As a result of the `clean glass`error, will the molar concentration of the NaOH solution be reported as too high or too low
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