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- The most important factor guaranteeing a biochemical change is a. A positive ∆G b. Appropriate temperature c. A negative ∆S d. A negative ∆Gbriefly explain a. K-Mer b. B ion c. HDRIf you heat Holiday “mulled (spiced) wine” to 40oC for 1 hour, you would expect that: a. it would become champagne b. it would contain fewer Calories per gram than celery c. more alcohol would have evaporated than water during the heating process, lowering the alcohol content (the %ABV), because ethanol has a lower boiling point than water d. A1 casein would be converted to A2 casein e. it will give you “a warm Holiday glow”
- 8-) used to determine how the change in concentration will Change the hade of reaction. a. General rate of reaction b. Rate react ion react ion C. second-order of veaction d. thind orderAt 39.9ºC, a solution of ethanol (XetOH = 0.9006, P * etOH = 130.4 Torr) and isooctane (P * iso = 43.9 Torr) forms a vapor phase with YetOH = 0.6667. The total pressure is 185.9 a. Calculate the activity and the activity coefficient of each component.b. Calculate the total pressure the solution would have if it were ideal.c. Comparing the ideal pressure to the actual pressure, what does this indicate about the molecular interactions?A. BOMB CALORIMETRY VIDEO a. Why should the water jacket of the calorimeter be reflectiv b. Why is benzoic acid used to calibrate a bomb primeter? C. Why should the fuse wire not ch the crucible cup? d. Why do you nee purge the nitrogen out of the bomb calorimeter? can you know if the combustion of your sample is complete? f. How would you prepare liquid samples for bomb calorimetry? FOR PLM PAYSICA SCIENCEDEPTUSE dreamstime
- 6. CONSTANT VOLUME CALORIMETRY Using a bomb calorimeter, 1.0 g of benzene (CcH6), a component of gasoline, was combusted to determine its energy content.2000 mL of water was used. a. Arrange the following steps of the CVC technique in chronological order. Connect the ignition wire to the sample using a cotton string. Cover the oxygen vessel bottom. Fill the calorimeter with 2000 mL of water. Fill the reaction vessel with oxygen. Ignite and analyze the results. Place the crucible into the oxygen vessel top. Place the vessel atop the calorimeter dock and insert. Put 1.0g of benzene into the crucible using a pipette. Weigh the crucible and tare.Find the Gibbs free energy of mixing when 2 moles of ethanol is mixed with 5 moles of water at a temperature of 27 °C. The pressure of the system is kept constant. The two liquids form an ideal solution. O A. -10.45 J O B. 10.45 kJ O C. -11.75 kJ O D. 11.75 kI O E. -10.45 kJbased on the table given, 1. what form of ILY is most present at pH4.0? a. ILY2- b. ILY1- c. ILY0 d. ILY1 e. ILY2+ 2. at pH9.0, at which electroed will ILY move? a. no movement b. anode c. cathode pls answer both. ill give thumbs up.
- film araund of a Gas A pusses thirough acatalyst. the thickness of film is f . Mole fraction of A in the bulk of gas is yAo- A the Film, No reaetion takes place. but when A Contucts with catalyst the fast reaction nA >An fakes place . An comes back to the bulk of fluid. Calculate NA of the Rilm bulk Catalys tA mixture containing glutamic acid, arginine, phenylalanine and valine was subjected to anion exchange chromatography at pH 7.0. Which of the amino acids interacted with the resin (anion exchanger) and last to be eluted with a buffer of decreasing pH? A. Glu B. Val C. Phe D. ArgRp Dextrose hydrous 50.0 g Sodium Chloride 9.0 g Calcium Chloride 0.3 g WFI (Water for injection) qs… 1 L Calcium Chloride MW: 111; Sodium Chloride MW: 58.5; Dextrose MW: 198 a. Please calculate how many mOsmol/L is the above LVP solution? b. How many mOsm/L Ca++ and Na+ contain the above solution? c. What is the above LVP solution tonicity?