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The denaturation of double stranded DNA to 2 single strands of DNA (dsDNA ? 2 ssDNA) is described by the following T dependence of the equilibrium constant Keq = [ssDNA]2/[dsDNA]. Calculate for the process ?G°, ?H°, ?S°, and DCp at 36.8oC (the ‘°' refers to the reference temperature of 36.8°C). Attach all work and a well labeled van't Hoff plot and explain any assumptions you make. Finally, calculate ?G at 298K. ?T(°C)? K (M)? ? 31.8? 5.56 x 104? ? 36.8? 1.39 x 105? ? 41.8? 4.33 x 105? ? 46.7? 1.44 x 106 Summary of Results: ??G° = ?H° = ?S° = DCp = ?G at 298K = 1
A sample of gas occupies 7 ml at stp. at what pressure would this sample occupy 500 ml if the pressure was changed to 525 degrees c?
A horizontal piston contains 34kg of water that is saturated at 36oC. Heat is transferred to the water until 80% of the water vaporizes.
The lab was where we had to carry out aldol condensation to prepare benzalacetophenones using C7H5OCl and acetophenone. The result was 4-chlorobenzaldehyde
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.59. What was the concentration of the solution.
In a separate experiment, 41.6 g of ClF3 was introduced into an empty 2.00 L container at 700.0 K . What are the concentrations of ClF3, ClF, and F2 when the mixture reaches equilibrium
Suppose a fluorine- nuclide transforms into an oxygen- nuclide by absorbing an electron and emitting a gamma ray
Molecular iodine, I2 (g), dissociates into iodine atoms at 625 K with a first-order rate constant of 0.271 s-1. If you start with 5.2x10^-2 M I2 at this temp.
Calculate the energy levels of the pi-network in octatetaene, C8H10, using the particle in the box model. To calculate the box length, assume that the molecule is linear and use the values 135 and 154pm for C--C and C-C bonds.
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.
A change in the primary sequence of a protein will never change how a protein is allosteric regulated. a.) True b.) False Which of the following is NOT a mechanism of enzyme regulation? a.) Feedback inhibition by a product. b.) Addition or removal..
Do not delete any of the atoms or bonds in the ring or directly attached to the ring with the Erase button, and do not move atoms or groups directly attached to the ring by dragging them.
If 1.87 of acetic acid() reacts with 2.31 of isopentyl alcohol() to give 2.96 of isopentyl acetate(), what is the percent yield of the reaction?
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