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belen martin

belen m.

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The irreversible liquid-phase isomerisation reaction A → B shows a complex reaction rate equation, in which $C_1$ and $C_2$ are constant at a certain temperature: $$-r_A = \frac{C_1 C_A}{(1 + C_2 C_A)^2}$$ The volumetric flow to the reactor is 10 L s⁻¹, with a concentration of A of 1.5 mol L⁻¹. Further, the reaction is associated with negligible heat effects, such that the reactor can be considered as isothermal. The constants $C_1$ and $C_2$ have been obtained from experiments at the reaction conditions and are 0.50 s⁻¹ and 1.8 L mol⁻¹ respectively. For further processing, a conversion of 90% has to be obtained. a) If the reaction is carried out in a CSTR, what reactor volume is needed? V = 290 L b) If the reaction is carried out in a PFR, what reactor volume is needed? V = 215 L c) Using a Levenspiel plot, indicate the configuration of a PFR and a CSTR in series, which results in the smallest combined reactor volume (i.e., first a CSTR and then a PFR or first a PFR and then a CSTR) CSTR 1st then PFR (2nd) d) Determine the size of the PFR and CSTR, where a minimum reactor volume is obtained. $V_{CSTR} = 136$ L, $V_{PFR} = 65$ L, $V_{TOT} = 201$ L

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Consider the Poset (Z+,|()|). The least upper bound of {2,3,6,9,12} is : a. 12 b. Does not exist c. 24 d. 36 e. Non of above Consider a full and balanced binary tree of height 6 . The number of vertices in this tree is: a. 24 b. 128 c. 96 d. 127 Define the relation R on the set of integers Z, where xRy if and only if |x-y|<=1. Identify the truth of the following propositions? a. R is reflexive. symmetric, transitive b. R is reflexive, anti symmetric, transitive c. R is reflexive. symmetric, not transitive d. R is reflexive, anti symmetric, not transitive Consider the following FSM. The output string generated by this FSM if the input string is 1110 is: a. 1110 b. 0111 c. 0011 d. 0110 e. None of the above 12. Consider the Poset (Z+,D. The least upper bound of {2, 3,6, 9, 12} is : a. 12 b. Does not exist c.24 d. 36 e.Non of above 13.Consider a full and balanced binary tree of height 6.The number of vertices in this tree is: a.24 b. 128 C. 96 d. 127 14. Define the relation R on the set of integers Z, where xRy if and only if |x - y|<= 1. Identify the truth of the following propositions? a. R is reflexive. symmetric, transitive b.R is reflexive, anti symmetric, transitive C. R is reflexive.symmetric,not transitive d.R is reflexive,anti symmetric,not transitive 15. Consider the following FSM. The output string generated by this FSM if the input string is 1110 is: a. 1110 b. 0111 0011 Start 0. d. 0110 e. None of the above

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ttackers often abuse these types of servers to steal information because the legacy protocol doesn't use encryption or perform any kind of integrity validation. Recommended practice dictates that you implement a more secure alternative, such as File Transfer Protocol Secure (FTPS) or Secure File Transfer Protocol (SFTP). SMB FTP VSFTPD SFTP

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Bissau Ltd. issued $4,000,000, 5-year, 8% convertible bonds at par. Bonds pay interest annually. Each $1,000 bond is convertible to 200 of Bissau's no par value common shares, which are currently trading at $25 each. The current market rate for similar non-convertible bonds is 10%. Assuming Bissau adheres to IFRS, the value to be recorded for the conversion option is Select one: A. $100,000. B. $0. C. $303,267. D. $5,000.

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1. Consider a symmetrical airfoil in an inviscid supersonic flow at an angle of attack, such that the upper front part of the airfoil is parallel with the flow as sketched in the figure below. t/c = 0.05 a = 0.6 $M_{\infty} = 3.2$ a.c C a) [2pt.] Sketch the pattern of shock waves and expansion waves along the airfoil. b) [7pt.] Calculate the lift and drag coefficients $c_l$ and $c_d$ using the shock wave expansion theory. t

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Question 3) An adiabatic vessel of unknown reactor type and unknown volume is operating at steady state and contains the following elementary gas phase reaction: A ? 2B There is no shaft work and the reactor feed is pure A. The total inlet molar flow is 10 mol/s and the volumetric flow rate is 100 liter/s. The following data is known: $T_0 = 300 K$ $\Delta H_R (300 K) = -10000 cal/mol$ $E_a = 10000 cal/mol$ $k(300 K) = 0.6 liter/mol.s$ $C_{p,A} = 30 cal/mol.K$ $C_{p,B} = 15 cal/mol.k$ a) If the outlet temperature is measured at 500 K, what conversion have you achieved in the vessel? b) Now imagine placing a cooling jacket around the vessel. What would be the total heat load placed on the jacked in order to maintain isothermal operation?

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Under a perpetual inventory system, which of the following entries would record the purchase of merchandise on credit? a. Debit Inventory and credit Accounts Payable b. Credit Sales and debit Accounts Receivable c. Debit Purchases and credit Accounts Payable d. Credit Purchases and debit Cost of Goods Sold Using a periodic inventory system, which of the following entries would record the cost of merchandise sold on credit at the time of sale? a. Debit Cost of Goods Sold and credit Purchases b. Credit Sales and debit Accounts Receivable only. No entry for inventory. c. Debit Cost of Goods Sold and credit Inventory d. Debit Inventory and credit Cost of Goods Sold On the maturity date, the payee investor of a note will a. debit Cash, credit Note Receivable and Interest Expense b. debit Cash, credit Note Payable and Interest Expense c. debit Cash, credit Note Payable and Interest Revenue d. debit Cash, credit Note Receivable and Interest Revenue The payment of an amount owed to a creditor Would A) increase assets B) increase liabilities C) decrease net income D) decrease liabilities

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Given that: • f(x) = h(x)sin(x) • h\left(\frac{7\pi}{2}\right) = 24 • h'\left(\frac{7\pi}{2}\right) = -15 Calculate f'\left(\frac{7\pi}{2}\right) f'\left(\frac{7\pi}{2}\right) =

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Data Sheet for Lidocaine Synthesis steps 1 and 2 2) In step 2, why do you need an excess of piperidine? (3 pts) 3) In step 2, what is left in the toluene layer that is discarded after extraction with 3M aqueous HCl? (3 pts)

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The graph shows the time passed and the amount owed on a loan Use the ordered pairs from the graph to fill in the missing values in the table. Enter your answer by filling in the boxes x y 4 11 575 475

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