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- A waste treatment pond is 50 m long and 25 m wide, and has an average depth of 2 m. The density of the waste is 75.3 lbm/ft3 . Calculate the weight of the pond contents in lbf, using a single dimensional equation for your calculation.Cereal is being dried in a vertical drier by air flowing countercurrent to the cereal. To prevent breakage of the cereal flakes, some of the exit air from the drier is recycled back to mix with the the moist fresh air. For each 1000 kg/hr of wet cereal fed to the drier, calculate the input of moist fresh air in kg/hr and recycle rate in kg/hr. The available data on stream compositions is (fractions): For water: Fresh air: 0.0132 Wet cereal: 0.200 Exit air: 0.263 Dried Cereal: 0.050 Air entering Dryer: 0.066(This question and the next 2 questions are breakdowns of the same question) A student John wanted to measure the molar mass of an unknown material (UM) via the boiling point change of a solvent. He chose a solvent, ethanol, that can dissolve the material and sugar. He wanted to use sugar (MW = 342.3 g/mol) as a reference sample to get an ebullioscopic constant for his system to reduce the effect of other measuring errors such as pressure, measuring errors, and impurity of the samples. He made 10 solutions each contain 100 g of ethanol and various amont of solute as list in the table. He fits the two sets of data and obtain the molar weight of the unknown materials. For this question answer the fitted boiling point of pure ethanol: ____ K. 4 sig. fig. Thre rest ? marks in the tale will be answered in the next two questions. Copy the data into Excel and use trendline to fit or calculate the average values for this and the next 2 questions. Sample # Sugar (g) B.P. (K) Sample # UM…
- Sulfur dioxide (A) diffuses through a stagnant layer of air (B) of 2 cm thickness at 45oC and 1.2 bar total pressure. The partial pressures of SO2 on the two sides of the air layer are PA0 = 0.85 bar and PAL =0.15 bar, respectively. Considering Air is a non-diffusing component and DSO2-Air = 3.5×10-5 m2/sec, calculate: 1) The molar flux of SO2 with respect to an observer moving with the mass average velocity.If 35,000 kg of whole milk containing 4% fat is to be separated in a 6-hour period into skim milk with 0.45% fat and cream with 45% fat, what are the mass flow rates of the two output streams from a continuous centrifuge which accomplishes this separation? (Ans; Cream=464.8335kg/h, Skim milk= 5368.4998kg/h)A 0.064 kg of octane vapor (MW = 114) is mixed with 0.91 kg of air ( MW = 29 ) in the manifold is 86.1 kPa, and the temperature is 290 K. Assume octane behaves ideally, what is the total volume of this mixture. Show unit analysis and conversion on solution. Round off to four decimal places.
- Estimate the Km and vmax from the data. [S] (M) Velocity (µM/min) 2.5 x 10-6 28 .00001 70 .00004 112 .0001 128 .002 139 .01 140 Km=.00001 vmax=140 Km=.002 vmax=112 Km=.01 vmax=140 Km=.00001 vmax=70What is the Molecular weight of a certain volatile liquid which is placed in 225 g flask which has total capacity volume of 252.17 mL. After the liquid was heated to 96.7 oC the gass volatilized and the weight of the flask measure 227.33g. What is the could be the MW of the volatile sample?A drug is infused continuously intravenously (IV) for treatment of a particular disease. The volume of the body fluid V = 16 liters. The drug is excreted (removed) through the kidneys at rate ke , proportional to the concentration of the drug in the body fluids. The drug is ineffective and not used by the body if its concentration is below Cmin and becomes poisonous if the concentration goes over Cmax . It is metabolized at a rate km as the concentration is >=Cmin. Let the parameter values Cmin= 4 mg/l, Cmax =40 mg/l, ke = 0.2/hr and km = 0.3/hr.a. How much is the maximum possible rate of infusion of the drug?b. How long the drug would continue to be effective if the infusion has been stopped as the concentration reached at the maximum level?
- I am allowed to work with someone... Using the Volumetric Pipet Data from Part C Calculate the: 12. Percent error between the known density (from Data A) and the average experimental density (from Calc 10)Table 1 below shows the data for the filtration of fruit juice to produce clarified fruit juice at 298.2 K. Table 1: Total volume of filtrate collected at certain time V * 103 (m3) t (s) 0.5 17.3 1.0 41.3 1.5 72.0 2.0 108.3 2.5 152.0 3.0 201.7 The filtration process was conducted at a constant pressure of 46.2 kN/m2. The area of the plate-and-frame the press was 0.0439 m2, and the pulp concentration was 23.47 kg solid/m3 filtrate. a) Convert the data in Table 1 into a graph. You can either use Excel or graph paper. Your graph should be self-explanatory. b) Using the graph in (a), estimate the specific cake resistance and the resistance of the filter medium to filtrate flow.A tank, containing 1520 liters of liquid, has a brine solution entering at a constant rate of 3 liters per minute. The well-stirred solution leaves the tank at the same rate. The concentration within the tank is monitored and found to be c(t) = e(-t/800)/80 kg/L. Determine the amount of salt initially present within the tank. Initial amount of salt = ? kg. Determine the inflow concentration cin(t), where cin(t) denotes the concentration of salt in the brine solution flowing into the tank. cin(t) = ? kg/L