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The protein lysozyme unfolds at a transition temperature of 75.5°C and the standard enthalpy of transition is 509 kJ mol-1. Calculate the entropy of unfolding of lysozyme at 25.0°C, given that the difference in the constant-pressure heat capacities upon unfolding is 6.28 kJ K-1mol-1 and can be assumed to be independent of temperature. Hint. Imagine that the transition at 25.0°C occurs in three steps: (i) heating of the folded protein from 25.0°C to the transition temperature, (ii) unfolding at the transition temperature, and (iii) cooling of the unfolded protein to 25.0°C. Because the entropy is a state function, the entropy change at 25.0°C is equal to the sum of the entropy changes of the steps.
Discuss the behavior of tungsten trioxide (or molybdenum trioxide) and product(s)
Calculate the pH of the solution when 20.00 mL of 0.10 M CH3CO2H (Ka= 1.76 x 10^-5) has been titrated
Could you please explain how to create a 260 L solution of ultra pure H2O with 1 molarity of sodium bicarbonate NaHCO3 Mwt 84.01 g/mol and 1 molarity of perchlorate from potassium perchlorate KClO4 138.55 g/mol
An aqueous solution of sodium chloride contains 4.50g of CaCl2, per liter. What is the molarity of CaCl2? When calcium chloride dissolves in water, the calcium ions
Use reduction-potential values to explain which halides can be oxidized by Fe3+ or by MnO4- in acidic solution?
The bromination solution is prepared by mixing liquid bromine with glacial acetic acid 1:4 v/v (bromine to acid). The density of bromine is 3.12 g/mL. Calculate the molarity of 1.00 L of bromine solution.
t-butyl bromide was dissolved in formic acid, H2CO2H, and incubated for to hours at 25oC for two hours. (A) Draw the structure of the product that formed.
The equilibrium lies far to the right. The reaction will proceed very slowly. The reaction contains significant amounts of products and reactants at equilibrium. The equilibrium lies far to the left.
Compute the final x value using quadratic formula If two moles of caron mono oxide gas and one mole of chlorine gas are placed in the vessel and heated to 500 Kelvin temperature to start the reaction?
write the molecular and net ionic equation for when AgNO3 and Na2CO3 are mixed. Then write the net ionic equation when each of the following stresses are applied to the same mixture.
A helium-filled weather balloon has a volume of 815 L at 22 oC and 752 mmHg. It is released and rises to an altitude of 7.16 km, where the pressure is 364 mm Hg and the temperature is -25oC
electrons and the quantity of electrons it has is the maximum. Calculate its mass number and a number that matches with the 34 neutrons it has.
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