1. For sodium perchlorate, AH =U= -382.9 and AH) =AHRydrationm =-369.5. What is AH,oln ? Is it an endothermic or exothermic process to dissolve sodium perchlorate? How do you know? mol

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45. | You find that if you hang a 1.25 kg weight from a vertical spring, it stretches 3.75 cm. (a) What is the force constant of this spring in N/m? (b) How much mass should you hang from the spring so it will stretch by 8.13 cm from its original, unstretched length?

Chemistry 5’G-G-C-T-A-T-T-G-A-G•G-A-T-C-C-T-G-G-A-T-G-C-C3’3’C-C-G-A-T-A-A-C-T-C-C-T-A-G•G-A-C-C-T-A-C-G-G5’   a. Give the two DNA fragments generated by the enzyme, and then calculate the binding free energy for re-association of the two, resulting fragments.b. Calculate the equilibrium constant for the formation of the uncleaved complex at 25°C in 1M NaCl.c. Calculate the equilibrium constant for association of the ‘sticky ended DNA’ fragments at 25°C in 1M NaCl.d. Determine the concentration of ds DNA (in part c) after enzyme digestion, if the starting dsDNA concentration was 10-8M.