Based on the thermodynamic properties provided for water, determine the amount of energy released for 165.0 g of water to go from 61.0 °C to -35.5 °C. Property Value Units Melting point 0.0 °C Boiling point 100.0 °C AHfus 6.01 kJ/mol AHvap 40.67 kJ/mol 4p(s) 37.1 J/mol. °C 4p(1) 75.3 J/mol.°C Cp (g) 33.6 J/mol. °C kJ
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- For the following results of Thermodynamics of Borax Solubility, the volume of Borax solution titrated by HCI is 8.00 mL. Table 1. Volumes of hydrochloric acid required to titrate a saturated borax solution at varying temperatures. The hydrochloric acid was a solution standardized at 0.2912 M. Borax Volume added (mL) Temp. (°C) 8.00 8.00 8.00 8.00 8.00 HCI Volume (mL) 50.5 33.75 40.7 27.02 30.0 17.95 20.2 13.43 10.3 8.55 Using Thermodynamic formula (R= 8.31 J/K•mol) and the above results, (e) AS° = (J/K⚫mol) Type your answer...For the following results of Thermodynamics of Borax Solubility, the volume of Borax solution titrated by HCI is 8.00 mL. Table 1. Volumes of hydrochloric acid required to titrate a saturated borax solution at varying temperatures. The hydrochloric acid was a solution standardized at 0.2912 M. Borax Volume added (mL) Temp. (°C) 8.00 8.00 8.00 8.00 8.00 HCI Volume (mL) 50.5 33.75 40.7 27.02 30.0 17.95 20.2 13.43 10.3 8.55 Using Thermodynamic formula (R= 8.31 J/K⚫mol) and the above results, (b) What is the y-intercept of the best fitting line for this data? Type your answer...What would be the standard free energy change if FADH 2 is used to reduce O 2 to water? Standard reduction potential values to be used for calculations.
- The maximum saturation, 28.3ug of enzyme in 25ml water catalyzes the oxidation of ethanol at a rate of 2.5mm/min. Calculate the kcat in units of seconds if the enzyme has a molar mass of 65kg/mol.You are evaluating the kinetics of an enzyme catalyzed reaction containing 5.5 μM total enzyme and 11.2 μM substrate. At this substrate concentration, you determine that the Vo = 88.6 μmol mL-¹. s-¹. If the Vmax 833.3 mM s the KM is: . == " 30.9 μΜ 10.4 μΜ Ο 124.6 μΜ 234 μΜ 94.5 μMWhat is time constant ? The steel ball bearings of 40 mm diameter and initially at uniform temperature of 600 °C are quenched in an oil bath maintained at 50 °C temperature. The heat transfer coefficient between the ball bearing and oil is 325 W/m2-K and the thermodynamics properties of the bearing can be taken as : k 45 W/m-K and thermal diffusivity a = 1.25 x 10-5 m/s. Determine : The time duration for which bearing must remain in oil to attain 225 °C temperature. b. The instantaneous heat transfer rate from the bearings when they are first immersed in oil and when they reach 225 °C.
- What is the Vmax of an enzyme at 1 µM with an activation free energy (AG#) of 55000 J/mol at 298K? -AG # RT k cat = 6.2× 10¹² (Ideal gas constant R = 8.314 J K¯1 mol-¹1) 0.14 μM s-1 -1 S-1 1.4 μM s 14 μM s-1 0.14 mM s-1 1.4 mM s-1Suppose that the data shown in the margin are obtained for an enzyme -catalyzed reaction. [S] (mM) V (mmol/ml min) 0.1 3.33 0.2 5.0 0.5 7.14 0.8 8.00 1.0 8.33 2.0 9.09 a.) Determine the Km and Vmaxb.) Assuming htat the enzyme present in the system had a concentration of 10-6M, calculate the turn -over numberCalculate the concentration of CuS in a solution in which [H3O+] is held constant at 2.0×10-4 M. (Cite the source of your thermodynamic constants)
- Calculate AG for the below balanced redox reaction as written. You may find a list of standard reduction potentials useful. 3 12 (s) + 2 Al (s) → 61 (aq) + 2 Al3+ (aq) O-4.24 x 102 kJ/mol O-6.48 x 102 kJ/mol O -2.12 x 102 kJ/mol O-1.27 x 103 kJ/mol O-6.37 x 102 kJ/molThe energy of activation for the reaction 2 HI – H2 + I2 is 180. kJ•mol-1 at 544 K. Calculate the rate constant using the equation k = Ae-EalRT. The collision diameter for HI is 3.5×10-8 cm. Assume that the pressure is 1.00 atm. 4.0 4.510e-27 X M-1.s-17.1 The following results were obtained for an enzyme-catalysed reaction Substrate concentration (mmolr'): Initial velocity (umol I' min"): 6.67 182 10.0 20.0 40.0 147 233 323 400 Calculate Km and Vmax