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- Table 5: Calculating AG Temp "C Temp Kelvin Ка In(Ka) AG=-RTIN(Ka) 22. 1 295.25, 0 0044521 -1.12 18950.34962 35 308 .1S 23236.969dH 0- Ocori4 889 -901 45° 318.18°k 0.0016855 - 8.69 22985.918 55° 328.15°K 0.00 0344201 -1.97 21144.06565 Average AG'= AH°= AS= (Note: the slope of the best fit line is equal to -AS" rather than AS" as stated in the video).Why is it important that the pressure is very low in EI-MS but much higher in CI-MS?(b) TABLE 3 shows data phase equilibrium diagram for carbon dioxide. TABLE 3 Pressure (atm) Temperature (°C) Triple point Critical point 5.2 -57 73 31 (i) Sketch a phase diagram for carbon dioxide (ii) Explain the phase changes that could possibly occur when a sample of carbon dioxide in a closed vessel under 1 atm pressure and a temperature of -78°C is pressurised isothermally to 10atm, followed by isobaric heating to 20°C.
- The melting temperature of a DNA molecule (in the sense of the temperature at which it undergoes denaturation) can be determined by calorimetric methods. The following data were obtained in 0.010 M Na3PO4(aq) for a series of DNA molecules with varying base pair composition, with f the fraction of G-C base pairs:f 0.375 0.509 0.589 0.688 0.750Tm/K 339 344 348 351 354Estimate the melting temperature of a DNA molecule containing40.0 per cent G-C base pairs.CI Cl2 heat 8⁰ (1) (2) (3) Based on your results for the radical chlorination experiment, predict which products would be most and least abundant in the product mixture. Briefly justify your answer. CI2 When 50 cm' of hydrochloric acid of concentration 2.0 mol dm is added to 50 cm' of sodium hydroxide solution of concentration 2.0mol dm, the temperature increase is 13.0°C HCl(aq) + NAOH(aq) + NaCl(aq) + H,O(1) The experiment is repeated using 25 cm of the same hydrochloric acid and 50 cm' of the same sodium hydroxide solution. What is the temperature increase? O A 4.9°C I B 6.5°C I C 8.7°C D 13.0°C
- Volatile and semi-volatile compounds can be analyzed by GCDetermine the molal analysis of the products of combustion when octane (C8H18) is burned with 200% theoretical air, and determine the dew point of the products if the pressure is 0.1 MPa.Formula for work done in isobaric process(according to chemistry thermodynamics)
- Ratio of specific heats of CO2 at 825K?how to sketch the thermogravimetric curve anticipated when a 25 mg sample of FeCl3.6H2O is heated from 0 deg C to 400 deg C. The following table summarizes some data about three iron (III) chlorides Compound Molecular mass Melting point, deg C FeCl3.6H2O 270 37 FeCl3.5/2H2O 207 56 FeCl3 162 306Sol. No. 1 2 3 4 5 Volume of KI (ml) 20 18 15 12 10 [KI] K 0.195121951 0.00039 0.175609756 0.0004 0.146341463 0.0005 0.117073171 0.0006 0.097560976 0.0004 Log K Q1) Plot Log K' on y-axis and Log [KI] on x-axis A) Slope = B) Intercept = e) Log K = D) K = Log [KI] -3.40894 -0.70969387 -3.39794 -0.75545136 -3.30103 -0.834632606 -3.22185 -0.931542619 -3.39794 -1.010723865