b. (i)(ii)A given bioreactor supports S. cerevisiae growth with oxygen uptake rates(OUR) of 0.34 mM h¯¹. Under limiting oxygen conditions, whereby the yeastculture consumes the oxygen as quickly as it is provided. What must be theconcentration of dissolved oxygen (mM) in the bioreactor to maintain idealgrowth? Assume kLa = 6 h³¹ and given that the partial pressure of O2 is 0.21atm and Ho₂ = 1.08 atm L-1 mmol¹. Note: Clearly outline your reasoning,indicating all the steps involved in the calculations and the respective units.Please, keep two significant figures throughout.If a researcher seals the flask from part (i), so that oxygen cannot enter, whichcompounds will accumulate?

(i)Write the mass balance equation for oxygen in the bioreactor under steady-state conditions.The…

Answered: b. (i) (ii) A given bioreactor supports…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A parcel of unsaturated air contains a mixture of dry air and water vapor. The specific humidity q of the air parcel is 12 g kg^−1. Recall that q = Mv / (Mv+Md),where Mv is the mass of the water vapor and Md is the mass of the dry air. This is equivalent to what we have been calling the fractional concentration of water vapor by mass. (a) If the air parcel is at a temperature T= 25◦C , what is the virtual temperature of the air parcel? (b) If the air parcel is at a temperature T= 25◦C and a pressure of 1000 hPa, what is the relative humidity of the air parcel? (c) What is the apparent molar mass of the air parcel?
(a) The heat evolved upon dissolution of atmospheric ozone into water is determined to be +5 kcal/mol at 298 K. Given that ozone has a Henry’s constant of 9.4 × 10−3 mol/L/atm at 298 K, determine its Henry’s constant at 273 K. Note that the definition of Henry’s constant is for the process air to water. (b) If the atmospheric ozone concentration in a polluted air is 100 ppbv, what is the concentration in equilibrium with a body of water in that region at 298 K? Note that you need to assume no losses of ozone other than absorption into water
One technique for studying the energetics of protein structure is to monitor the struc- ture of the protein as a function of the osmotic pressure. In these experiments the os- motic pressure of the solution is varied by using polymers of different molecular weight and concentration. In an experiment poly(ethylene glycol) (PEG) with a molecular weight of 1000.0 g mol- was used. What concentration of PEG is needed to create an aqueous solution with an osmotic pressure of 150.0 Pa at 25°C? You may assume that PEG is uncharged and that it does not dissociate or aggregate.
3. A bacteria is able to grow on hexadecane as a substrate: C16H34 + 16.28 O2 + 1.42 NH3 →1.65 C4.4HBO₂N8 + a CO₂ + 13.11 H₂O (a) What is the respiratory quotient (mol/mol)? (b) What is the cell formula for this microorganism? (c) Assuming 100% conversion, calculate the yield of cells from hexadecane (Yx/s) and from oxygen (YX/0₂).
Calculate the amount of ester, CH3COOCHs formed when 2.00 moles of ethanoic acid,CH3COOH and 2.00 moles of ethanol, C2HsOH are allowed to come to equilibrium at 300 K CH3CO0C2Hs(aq) + H2O(1) Kc=4.12 (ANS = nCH3COOCHs= 1.414 mole; mass CH3COOC2Hs= 124.43 g)
6. When the ideal-gas reaction A+B=C+Dhas reached equilibrium, state whether or not each of the following relations must be true. Here n¡ is the number of moles of species i in equilibrium, P, is the partial pressure of i, and µ; is the chemical potential of i. Here a simple True or False answer is sufficient. (a) nc+np=nA +ng (b) Pc+Pp=PA+PB (c) na=ng (d) nc=na (e) If only A and B are present initially, then nc=np (f) Ha + HB= Hc+ Hp no matter what the initial composition. (g) If only A and B are present initially, then in equilibrium we must have nc # 0. (h) The equilibrium constant Kp(T)= PĄPB/(PcPp). (i) The value of –RT In Kp(T) = µE(T)+µ8(T)– H3(T) –- H§(T). ) The equilibrium constant is independent of the total pressure.
(a) A commercial 737 jet transporting 143 passengers and 5 crew members from Kansas City (MCI) to Baltimore (BWI) burned 11,800 lb (about 1700 gallons) of Jet A fuel en route. Jet A fuel is kerosine based, consisting primarily of CnH2n+2 hydrocarbons, with n =6 to 16, so the carbon:hydrogen ratio is close to 1:2. During this flight, how much CO2 was released into the atmosphere? Assume the combustion of the fuel was complete, so all the fuel was burned to form CO2 and H2O. Give both the mass of CO2 produced (in kg and in lbs) and the volume it would occupy at 298 K, 1 atm.(b) How much CO2 would be released into the atmosphere if those passengers and crew made the trip instead, in pairs, in hybrid cars at 40 miles per gallon. Assume the density of the gasoline is 0.75 kg L-1 and that carbon and hydrogen dominate the composition in a ratio of 1:2. The road trip is 1082 miles.
A student performed the experiment described in this module, using 6.00 mL of a 3% H2O2 solution with a density of 1.03 g mL-1. The water temperature was 22 ° C, and the barometric pressure in the laboratory was 30.30 in. Hg. After the student immersed the yeast in the peroxide solution, she collected 65.40 mL of O2. (2) Obtain the water vapor pressure at the water temperature.
b) Determine the standard enthalpy change and std. Gibbs free energy change of reaction at 400 k for the reaction СO(g) +2H2(g) — CHОН (g) At 298.15 K, AH.co (0)= -26.41 kcal/mol, AH AG.co (9)= -32.8079 kcal/mol, AG cH,oh(9)= -38.69 kcal/mol, °.CH20H(9)= -48.08 kcal/mol, The standard heat capacity of various components is given by, CO = a + bT + cT² + dT³, where C, is in cal/mol-K and T is in K b x10² с х105 d x10° Соmponent CH3OH а 4.55 2.186 -0.291 -1.92 CO 6.726 0.04 0.1283 -0.5307 H2 6.952 -0.0457 0.09563 -0.2079
(i) Differentiate between adsorption and absorption.(ii) Out of MgCl2 and AlCl3 which one is more effective in causing coagulation of negatively charged sol and why?(iii) Out of sulphur sol and proteins, which one forms multimolecular colloids?
Sulfuryl fluoride (SO2F2) is a commercial fumigating chemical that can be synthesized from the following reaction: SO2 + F2 ↔ SO2F2. Under SATP, describe the nature of the reaction, and describe the conditio required for the formation of sulfuryl fluoride. Use diagrams to explain your answer. Use VSEPR theory describe the molecular solubility in various compounds such as water, oil, and sulfuric aci d.tons acid.
(1) (2) ] A certain species of trout requires dissolved oxygen of 7.5 mg/L. Would it be wise to release the trout in a mountain stream at an altitude with a Po2 = 0.17 atm. (KH (02) = 1.3x10-³ mol/Latm). Calculate the mole fraction for the following: 14.5 g of HNO3 in 150 g of H₂O. (b) moles of Solute kg Solvent X (a) H=1.01 N = 14.00- 50 mm= 63.01 g/mol 03=16.0x3 Imol 14.6g HNO3 63.01g 149 150 g 1000g = 0.15 kg 6.00 M HCI. (notice, concentration is an extensive property. You can assume any volume!) 0.23 mol HNO3 0.16 kg H2O 1.53 = 0.23 mol HNO3

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