Chapter 13, Problem 13.6E

A burning dump emits an estimated 1.5 kg/min of nitrogen dioxide (NO2 ). On a partlycloudy morning with a 2.5 m/s wind and temperature of 18°C, what is the concentrationof NO2 at a distance of 3.0 km directly downwind of the dump? Does this exceed theshort-term exposure limit for NO2 ? State your assumptions.

For each set of measurements below, calculate the Grubbs statistic, G, look up the appropriate critical value of G from Table 4.6, and determine whether the Grubbs test supports discarding the first value in the list at the 95% level of confidence. a) 106.0, 165.0, 167.5, 170.5, 163.5, 170.7 (Geale -2.028; Gerit 1.822; yes, the Grubbs test supports discarding 106.0) b) 214.8, 263.0, 229.9, 236.9, 221.8, 230.8, 241.1 c) 357.0, 309.3, 304.9, 314.8, 305.8, 295.3, 284.7, 299.5 TABLE 4-6 Critical values of G for rejection of outlier Number of observations otsulsve os Tenos nagsibarito G to buboxy (95% confidence) 456 1.463 1.672 1.822 7 1.938 8 upa 2.032 9 2.110 10 2.176 - 1 12 15 20 11 2.234 2.285 2.409 2.557

#1 A irreversible isothermal gas-phase isomerization reaction is given as: AB. This reaction is conducted in a 400L batch reactor and 100 mol of A (NAD = 100 mol) is charged into this reactor. The rate of reaction is determined as a function of the conversion of reactant A and the results are given below. The temperature was constant at 500K and the total pressure was constant at 830 kPa. The entering number of moles of species A is 100 mol. Calculate the time necessary to achieve 80% conversion. 0 0.1 0.2 0.4 -TA (mol/m³.s) 0.45 0.37 0.3 0.195 0.6 0.113 0.7 0.079 0.8 0.05

#3 A irreversible isothermal liquid-phase reaction is given as: A → B is conducted in continuous flow systems. The rate of reaction is determined as a function of the conversion of reactant A and the results are given below. The temperature was constant at 500K. The entering molar flow rate of A is 0.4 mol/min. a) If this reaction is conducted in two CSTRS in series. Calculate the required reactor volume of each CSTRS if conversion X₁ = 0.4 and conversion X2 = 0.8. b) If this reaction is conducted in two PFRS in series. Calculate the required reactor volume of each PFRS if conversion X₁ = 0.4 and conversion X2 = 0.8. c) If this reaction is conducted in a PFR followed by a CSTR. Calculate the required reactor volume of PFR if conversion X₁ = 0.4 and of CSTR if conversion X2 = 0.8. X -A (mol/L.min) 0 0.1 0.2 0.4 0.6 0.7 0.8 0.45 0.37 0.3 0.195 0.113 0.079 0.05

#2 An exothermic reaction, AB + C, was carried out adiabatically in a PFR or a CSTR and the following data was recorded. The entering molar flow rate of A was 300 mol/min. Calculate the necessary i) PFR volume and ii) CSTR volume to achieve 40% conversion. X 0 0.2 0.4 0.45 0.5 0.6 0.8 0.9 -TA (mol/L-min) 1 1.67 5 5 5 5 1.25 0.91

Question: McDaniel Shipyards wants to develop control charts to assess the quality of its steel plate. They... McDaniel Shipyards wants to develop control charts to assess the quality of its steel plate. They take ten sheets of 1" steel plate and compute the number of cosmetic flaws on each roll. Each sheet is 20' by 100'. Compute within 99.73% control limits. Based on the following data: a. Develop limits for the control chart b. Is the process in or out of control? c. Can you detect any outliers, if so which value(s)? Number of Sheet flaws 1 1 2 1 3 2 4 0 5 1 6 5 7 0 8 2 9 0 10 2

Question: McDaniel Shipyards wants to develop control charts to assess the quality of its steel plate. They take ten sheets of 1" steel plate and compute the number of cosmetic flaws on eac... McDaniel Shipyards wants to develop control charts to assess the quality of its steel plate. They take ten sheets of 1" steel plate and compute the number of cosmetic flaws on each roll. Each sheet is 20' by 100'. Based on the following data, develop limits for the control chart, plot the control chart, and determine whether the process is in control. Answer the following questions below. Number of flaws Sheet 1 1 2 1 = 3 2 4 0 5 1 6 5 7 0 8 2 9 10 0 2 PLEASE WRTIE NEATLY AND EXPLAIN! (: Thanks 1. Calculate the standard deviation of control chart. (a) the standard deviation = 1.0832 (b) the standard deviation = 1.1832 (c) the standard deviation = 1.4 (d) the standard deviation = 1.04 27. 2. Using +- 3 olimits, calculate the LCL and UCL for these data. 3.549; LCL = -3.549 (a) UCL (b) UCL 3.549;…

Derive an expression for incompressible flow in a horizontal pipe of constant diameter andwithout fittings or valves which shows that the pressure is a linear function of pipe length. Whatother assumptions are required for this result? Is this result valid for non-horizontal pipes? Howwill the presence of fittings, valves and other hardware affect this result?

Ethylene glycol liquid is used as an antifreeze in many applications. If it is stored in a vessel at a pressure of at 150 psig flows through a ¾ inch-diameter hole to atmospheric pressure. Estimate the discharge rate if the ambient pressure is 1 atm. For ethylene glycol at 77°F, the specific gravity is 1.15 and the viscosity is 25 cP. The molecular weight is 62.07.