The feed to an ammonia synthesis reactor contains 25 mole % nitrogen and the balance hydrogen. The flow rate of the stream is 3000 kg/hr. The rate of flow of nitrogen into the reactor in kg/hr (Round up to two digits after decimal is??

A reaction is 2nd order with respect to [ Reactant A ]. If the rate constant from the equation of the trendline in Excel is 3.22 x 10 3 (units deliberately omitted), and the initial concentration is 0.437 M A, then what is the[ Reactant A] (in M A) at 300 minutes? IMPORTANT: When entering your answer: • Enter the number only (no units) • Do not leave any spaces • Use a leading zero before the decimal when necessary • Report your number to 3 decimal places (regardless of the significant figures) • Correctly round your answer to the 3rd decimal place (margin of allowed error is only + 0.001, so always use un-rounded numbers in your calculations). If the last digits are zeros they will not display once you click away, but the answer will still be marked correct. Examples: 0.123 or 0.045

Xolani is a chemical engineering student working at a separation company. He was given a mixture of hydrocarbons to separate in a continuous distillation column. The feed mixture contains 5% mol C3, 15% mol i-C4, 35% mol n-C4, 20% mol i-C-5, and 25% mol n-Cs. The feed has a flow rate of 200 kmol/h and enters as a liquid at the boiling point. It is desired to recover 96% mole fraction of the light key in the distillate and 92% of the heavy key in the bottom product. The average relative volatility (a) values are given in Table 1. Table 1: The average relative volatility (a) Feed stream C3 i-C4 n-C4 i-C5 n-C5 α 5.0 2.6 2.0 1.0 0.85 1.1. Determine the light key (LK) and heavy key (HK) components. 1.2. Give the material balances over the column (give composition of bottoms and distillate streams) in table form. 1.3. Use Underwood's method to determine the minimum reflux ratio (Rmin) (estimated values of 0 are 1.2, 1.3 and 1.4). 1.4. Use the Fenske equation to determine the minimum number…

Whole milk containing 4% fat (and the rest water) is to be separated into skim milk with 0.45% fat and cream with 45% fat. What are the flow rates of the two output streams from a continuous centrifuge which accomplishes this separation if the input stream is 150 kg/h? Draw and label a flowchart of this process before you start your calculations. Once you finish your calculations of H₂ write back the results on the flow chart. 100 G 969

In a groundwater (flow rate = 3 m3/s) contaminated by AsO43- (concentration = 50 mg/L), if the concentration of AsO43- must be lowered to 2 mg/L after remediation by precipitation with Fe (III), at what mass rate should Fe (III) be added to achieve this goal? AsO43- + Fe3+ = Fe(AsO4) (s)

At room temperature sucrose is hydrolyzed by the catalytic action of the enzyme sucrase as follows: sucrase sucrose products Starting with a sucrose concentration C40 = 1.0 millimol/liter and an enzyme concentration Ceo = 0.01 millimol/liter, the following kinetic data are obtained in a batch reactor (concentrations calculated from optical rotation measurements): CA (mmol/L) 0.84 0.68 0.53 0.38 0.27 0.16 0.09 0.04 0.018 0.006 0.003 t (hr) 1 2 3 4 5 7 8 9 10 11 Determine whether these data can be reasonably fitted by a kinetic equation of the Michaelis- Menten type, or k3C,CeO Са + См -rA = If the fit is reasonable, evaluate the constants k3 and CM.

At room temperature sucrose is hydrolyzed by the catalytic action of the enzyme sucrase as follows: sucrase sucrose products Starting with a sucrose concentration CAO = 1.23 millimol/liter and an enzyme concentration CEO = 0.04 millimol/liter, the following kinetic data are obtained in a batch reactor (concentra tions calculated from optical rotation measurements): CA, millimol/liter | 0.84 0.68 0.53 0.38 0.27 0.16 0.09 0.04 0.018 0.006 0.0025 t, hr 1 3 4 5 6 7 8 9 10 11 K3CACEO -TA = where CM = Michaelis constant Ca + CM If the fit is reasonable, evaluate the constants k3 and CM. Solve by the integral method.

10. A container is separated into two halves by a membrane. Your lab partner assistant, Thurmond, is supposed to place a MgCl2 solution on side 1 and a NaCl solution on side 2. He is then supposed to measure the rate of water movement across the membrane. Unfortunately, Thurmond is not very good about keeping complete lab notes and he has forgotten to write down some data and calculations. Using your knowledge of osmosis, complete the following table. Temperature is 15°C and the hydraulic conductivity for the membrane is 0.4 ml/atm sec. MgCl2 Concentration on Side 1 NaCl Concentration on Side 2 80 mM Osmolarity on Side 1 Osmolarity on Side 2 Difference in osmotic pressure 60 mosM across the membrane Jy 0.95 ml/sec Reflection coefficient (ơ) Direction of water movement

In order to determine the rate law for the decomposition of hydrogen peroxide, a student collected pressure versus time measurements as the hydrogen peroxide decomposed with the addition of KI. The following graph was produced at 21.3 °C. What is the rate of formation of O2? Pressure versus Time 150 300 250 200 150 100 20 40 60 80 100 120 140 160 180 -50 time (s mol L XS A. 0.0858 mol L Xs В. 2.07 mol L Xs С. 1.13 *104 mol L Xs D. 11.7 (uo amsed

Draw and label the given streams and derive expressions for the indicated quantities in terms oflabeled variables.1. The feed to an ammonia synthesis reactor contains 25 mole% nitrogen and the balance hydrogen. The flow rate of the stream is 3000 kg/h. Calculate the rate of flow of nitrogen into the reactor in kg/h.