A wastewater treatment plant (WWTP) releases effluent into a stream with mean depth 2 m and mean velocity 0.5 m/s. The BOD concentration at the WWTP is 15 mg/L, and the oxygen deficit is negligible. The de-oxygenation rate in the stream is 0.8 d-1 and the re-aeration rate is 1.2 d-1. a) Calculate the BOD concentration 20 km downstream from the WWTP. b) Calculate the D.O. deficit 20 km downstream from the WWTP. c) Define "critical distance" in the context of river pollution modeling and compute it for this example.
Q: 2. Predict the products for the following reduction reaction by LiAlH4 and NaBH4 and explain why the…
A: NaBH4 is a weak reducing agent, it reduces aldehyde and ketone to alcohol.LiAlH4 is a strong…
Q: Determine the pH during the titration of 58.3 mL of 0.310 M acetic acid (K, = 1.8×10) by 0.310 M…
A:
Q: Give the IUPAC name for each compound. Part 1 of 2 Name: Part 2 of 2
A: Since,Rule of IUPAC-1) Longest chain as parent chain.2) Numbering start from those side where more…
Q: Calculate the Gibbs free energy of the reaction from mixing 50 mL each of 0.50 M AgNO3(aq) solution…
A: Answer:Here:
Q: For questions 13-14, refer to the following three reactions as your "answer bank." HCI H₂ Pd/C A B…
A: The objective of the question is to identify which of the given reactions (A, B, C) would not be…
Q: H3CO Η 2 HCONH,
A: It is a reaction between formamide and a ketone. This is a reductive amination reaction that takes…
Q: (i) COOH (h) (1) 2 CH3CH₂Li (2) H3O+ H H3O+ ↑ C=PPh3 + 요. CH3 NILL H+, heat
A: The question is based on organic reactions.We need to identify the product and explain its…
Q: Consider the following acidic reaction at constant temperature: HCIO2 (aq) H+ (aq) + CIO2 (aq), K₂ =…
A:
Q: Calculate the pH of a 0.345 M aqueous solution of acetylsalicylic acid (aspirin, HC9H7O4) and the…
A: The answers were determined to be:pH=1.99[HC9H7O4]=0.335 M[C9H7O4-]=0.010 MExplanation:Step 1:…
Q: Question 1: Show the major products, with stereochemistry where applicable, for the reactions of…
A: The objective of the question is to predict the major products of the reactions of 1-pentyne with…
Q: Draw a structural formula for the product of the reaction shown. CH3 + CH3 • Use the wedge/hash bond…
A: The objective of the question is to predict the product formed in the given reaction.
Q: Please provide explanations
A: answer attached below Explanation:Step 1: Step 2: Step 3: Step 4:
Q: Question 1: Show the major products, with stereochemistry where applicable, for the reactions of…
A: The objective of the question is to predict the major products of the reactions of 1-pentyne with…
Q: Question 4 What is the appropriate IUPAC name for compound shown?
A: The IUPAC nomenclature is a oderly way of naming organic compounds primarily based in most cases on…
Q: Mercury and oxygen react to form mercury(II) oxide, like this: 2 Hg(1)+O₂(9)-2 HgO(s) At a certain…
A: 0.1214 Compound Amount H223.0 gO217.1 gHgO7.1 g
Q: 3) Draw two more resonance structures of the following compound. Order the structures by increasing…
A: When two or more pi electrons remain in conjugation with each other then the electrons can flow in…
Q: From phenol, ethylene, Br2, Fe, NaOH, HCI, LiAlH4, NaBH4, H2O, CO2, H2SO4, Mg, ether, please suggest…
A: The question is based on the concept of organic synthesis.We need to synthesize the product using…
Q: (a) Classify the transformation below as oxidation, reduction or neither. (b) Please identify the…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: Draw the monomers that could be used to form the following polymers.
A: Answered the question.
Q: When 85.0g of CH4 are mixed with 360. G of O2 the limiting reactany is
A: We need to determine limiting reagent of the reaction.
Q: Question 6 What are the correct configurations of the chiral centers in the following compound? 10=0…
A: The Cahn-Ingold-Prelog (CIP) priority rules, also known as the sequence rules, are used to determine…
Q: Perform the following calculations, reporting the answers with the correct number of significant…
A: The question demands doing a mathematical calculation and stating the result in exponential format…
Q: Draw the Fischer projection of an L-aldotetrose. Click and drag to start drawing a structure. X
A: Fischer projections are the two-dimensional representations of the three-dimensional molecular…
Q: Calculate the solubility (in g/L) of CaSO4(s) in 0.300 M Na, SO4(aq) at 25°C. The Ksp of CaSO4 is…
A: The objective of this question is to calculate the solubility of CaSO4 in a solution of Na2SO4. The…
Q: Identify the configuration of each chiral center in the following compound: m2 8 In the boxes below,…
A: Chiral centers, also known as stereocenters or chiral atoms, are a fundamental concept in…
Q: Predict the major product(s) for each of the following reactions: ? KMnO4 NaOH, cold HCI H2 Pt 1)…
A: The given reaction scheme is shown below.We have to predict the major product of the given reaction…
Q: Consider these potential pharmaceutical drugs (where the symbol R is used to represent the rest of…
A: The acidity of the compound is related to the ease by which the H atoms are removed as H+ from the…
Q: For each of the following compounds, determine the multiplicity of each signal in the 1H-NMR…
A:
Q: A nucleophile donates a pair of electrons to form a new bond in a reaction. A nucleophile is also…
A: For a molecule to act as nucleophile, it must have either a lone pair or negative charge.
Q: What is the predicted major product of the reaction shown?
A: The given reaction is the formation of azo compounds. In the given reaction, aniline on reaction…
Q: 20. How many different products are possible for the following reaction? Consider both regio- and…
A: An arrow always depicts from a region of high electron density to low electron density ; that is…
Q: below. Ignore inorganic byproducts. H OH Но Н -ОАс Н Он Он H
A: The objective of the question is to find the product of the reaction in the chair conformation..
Q: Organic chemists often purify organic compounds by a method known as fractio wanted to prepare and…
A: The objective of this qeustion is to calculate the sample mean and sample standard deviation from a…
Q: Show three or four different drawings that show three or four different relevant resonance…
A: Resonance structures are the different structures that represent the delocalization of electrons in…
Q: A O
A: The given molecule is a bridged bicyclic compound. The two rings are attached through a bridge.
Q: 1. Predict the structure of the organic product for the following reduction reactions [6 x 2] a) 요.…
A: Answer below this question Explanation:
Q: Propose a reaction mechanism and fill in the product of the following transformation: 1. NaH MeO₂C-…
A:
Q: The energy gap of GaAs is 1.4 eV, a lot higher than that of Ge, the element between them in the…
A: The objective of the question is to identify the reasons why is having a higher band gap than .
Q: it is homework you see there
A: The objective of the question is to determine the overall order of the reactions given the rate…
Q: Determine the number of atoms of O in 25.3 moles of Fe(ClO₂)₃.
A: 1 mole of any substance contains 6.022 × 1023 atoms.1 mol = 6.022 × 1023 atoms
Q: what's the number-average molecular weight for a linear polytetrafluoroethylene of total length…
A:
Q: Can a hair be identified to a specific individual? Why or why not?
A: Yes, a hair can potentially be identified to a specific individual through forensic analysis.…
Q: chem 534 cha Hư OAc please show stereochemistry H₂COCH ? H + H H- CO₂CH3 2. 0Ac ? hv= ? 40°C 3. H₂C…
A: “Since you have posted a question with multiple sub parts, we will provide the solution only to the…
Q: What is the major organic product of this reaction? (i) NaBH4 (hydride source) (ii) H* Select one:…
A: NaBH4/H+ is reducing agent which has hydride ion as nucleophile it can reduce carbonyl compounds…
Q: Complete the reactions below, briefly explaining in each case type of reaction taking place. i. A…
A: Given two incomplete reactions, briefly explain each type of reaction.
Q: A mixture of gaseous reactants is put into a cylinder, where a chemical reaction turns them into…
A: The objective of the question is to determine the nature of the reaction (exothermic or…
Q: 2. Complete the following reaction. Show the intermediate, and propose a mechanism for the second…
A: This is an example of Hoffmann elimination reaction. In this reaction proton is abstracted from the…
Q: A scientist prepared a 0.034 M NH4Cl salt solution by dissolving the solid salt in water. Calculate…
A: “Since you have posted multiple questions, we will provide the solution only to the first question…
Q: B) Determine the structure of polymer that will be synthesized from the given monomer unit Initiator…
A: A polymer is a large molecule that is formed by the repetition of small units called monomers, and…
Q: help with 13 pls
A: the major product of the reaction is (Z)-but-1-en-1-yl-benzeneExplanation:Step 1: The above reaction…
Trending now
This is a popular solution!
Step by step
Solved in 1 steps with 2 images
- A water containing 50 mg/L of phosphate (PO,") is flowing in an open channel at a volumetric flow rate (Q) of 2 MGD (million gallons per day). (a) What is the concentration of phosphate expressed in (i) mg/L as PO, --P, (ii) mM as PO., and (iii) mM as PO, P. (b) Find the mass flow rate (S) of phosphate through any section perpendicular to the direction of flow in the open channel expressed in lb/day? Given: Atomic weights: P= 31 g/mole, O = 16 g/mole, 1 gallon = 3.785 L, 1 kg = 2.204 Ib. %3DAccording to FM Wilhelm (Encyclopedia of Inland Waters, 2009), pristine waters have up to 1 ppm of BOD, moderately polluted waters 2-8 ppm, and treated municipal sewage up to 20 ppm, and standards for the discharge of effluent from wastewater treatment plants have the range of over 20 ppm and require a minimum flow in receiving waters to ensure sufficient dilution. The calculated DO value at the initial day was 316 ppm and after a 5-day incubation period, the DO value was calculated to be 298 ppm. Calculate the BOD5 and give its classification. A 89 ppm, wastewater treatment plant effluent B 8 ppm, moderately polluted water 1 ppm, pristine water 18 ppm, treated municipal sewage. A wastewater treatment plant discharges 10 MGD effluent containing 200 mg/L ultimate BOD into a stream flowing at 90 MGD with ultimate BOD of 5 mg/L. The deoxygenation constant, kd, is 0.12/day. (a) What is the ultimate BOD (BOD) remaining in the stream at a distance of 10,000 m downstream if the stream flows at a constant speed of 0.10 m/s? (b) What should be the treatment plant effluent BOD. (CW) in mg/L if the ultimate BOD, at 10,000 m downstream cannot exceed 5 mg/L?
- The air in a recently used classroom 9m x 7m x 9m tested 0.12% carbon dioxide. How many cubic meters of fresh air must be admitted per minute in order that 10 minutes later it shall contain not over 0.06% carbon dioxide. Fresh air contains 0.04% carbon dioxide. Assumeimmediate mixing of fresh with stale air. (A) 14 (B) 11 (C) 15 (D) 19 (E) 17According to FM Wilhelm (Encyclopedia of Inland Waters, 2009), pristine waters have up to 1 ppm of BOD, moderately polluted waters 2-8 ppm, and treated municipal sewage up to 20 ppm, and standards for the discharge of effluent from wastewater treatment plants have the range of over 20 ppm and require a minimum flow in receiving waters to ensure sufficient dilution. The calculated DO value at the initial day was 316 ppm and after a 5-day incubation period, the DO value was calculated to be 298 ppm. Calculate the BOD5 and give its classification. A) 89 ppm, wastewater treatment plant effluent B 18 ppm, treated municipal sewage (C) 1 ppm, pristine water (D) 8 ppm, moderately polluted water> EL session.masteringchemistry.com MasteringChemistry ROSTER-2019-SPRI-PULLM-CHEM-101 blackboard wsu Google Search MasteringChemistry: HW 8 KHW 8 Applications for Dilution Calculations K8 of8 Dilution as a procedure in analysis We sometimes purposely dilute solutions if the analyte concentrations wavelengths in the visible (and sometimes uitraviolet) range. Based on the dissolved solute's properties, we can quantify that solute's concentration are too high to permit an accurate measurement. For example, a spectrophotometer can measure the amount of light that passes through a sample solution for If the solute's concentration is too high, a relatively small amount of incident light having the wavelength that corresponds to the solute's absorption behavior will less light is absorbed, and the detector in the spectrophotometer can generate more reliable data. reach the dete ctor, which results in an inaccurate measurement (consider the result if you blocked the light with an opaque…
- To /bbhosted.cuny.edu/webapps/assessment/take/launch.jsp?course_assessment_id%3_2032634_1&course_ id= 201483.. Remaining Time: 1 hour, 09 minutes, 31 seconds. * Question Completion Status: A student makes a solution by dissolving 25.4 g of NaOH into 450 g of water. What is the mass percent (m/m) concentration of this solution? QUESTION 4 13.9 g Sodium sulfate (Na2SO4) has a solubility of in water at 20 °C. Which of the following mixtures will yield 100 mL a saturated solution at this temperature?. O 0.50 g of Na,SO4 in 1.0 mL of water O 125 g of NazSO4 in 1.0 L of water O 0.50 g NazSO, in 100 mL of water O 4.3 g Na,sO, in 100 mL of water O 17 g of Nazs04 in 0.500 L of water Click Save and Submit to save and submit. Click Save All Answers to save all answers. Save All Answers re to search 50°F Mostly sunn DELL DII home prt sc F10 F1 end inse F3 FS F9 F12 %23 %24 3 4. 5 7 8. Y D R EA solution of HCl was titrated against sodium carbonate. What is the average normality of acid in the given data? (MW Na₂CO3 = 106) T2 0.3479 0.3562 0.3042 Weight (g) Initial V (ml) 0.80 1.60 35.20 36.70 39.80 Final V (mL) Vol HCl used (mL) 35.10 39.40 N of HCl (eq/L) 0.1954 0.1870 Average N of HCl (eq/L)A chemical factory has been illegally disposing their chemical wastes without necessary pretreatments directly onto a river. To assess the extent of contamination, the H+ concentration of the river at 4 different sampling sites were obtained and shown below. Complete the table with the missing data. Site A B D Distance from the O km chemical factory 2.0 km 4.0 km 8.0 km [H+], mol/L 3.16 x 10-2 3.98 x 103 2.00 x 10-5 2.51 x 10-8 pH РОН
- 1)Please express the normal salt (NaCl) concentration in body fluid into molarity (mM).2) Commercial fuming Sulphuric acid (Oleum-H2S2O6) is 99.9%. solution. Please convert it into molarity.3) Find out the Volume (dm3) of product (gas) at RTP when 0.58 M, 150 mL NaOH (aq.) reacts with 350 mL, 0.25 NH4Cl.4) The above reaction has the product Ammonia, which when dissolved in 650 mL ethanol makes an alkaline ethanolic solution. Find its molarity (M) 5) Calculate the adult dose as per the BW of the baby. (Child dose-50 mg and the BW of the baby is 48 lb (British pound) (1lb=0.453 Kg)SO4 -two content in 7689mL of a water sample was precipitated as Na2SO4. The precipitated was filtered, washed and calcined in an empty crucible with a mass of 27.0234g. The mass of the crucible plus Na2SO4 (142g/mol) was 27.7708g. Calculate the %m/v of Na (23g/mol) and the concentration of Na in the sample in ppm.A first-stage recovery of magnesium from seawater is precipitationof Mg1OH22 with CaO:Mg2+(aq) + CaO(s) + H2O(l)---->Mg(OH)2(s) + Ca2+(aq) What mass of CaO, in grams, is needed to precipitate 1000lb of Mg(OH)2?