Present the pertinent chemical equations involved in the analysis of dissolved oxygen concentration in a real water sample using the Winkler Method

Q: Sample consisting of 3.00 mol of diatomic perfect gas molecules at 200 K is heated reversibly at…

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Q: -9. CsHe (benzene) Projection Drawing: Perspective Drawing: Draw the two resonance forms

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Q: 1- Calculate the rate law equation. Report the rate constant with its unit. What is the overall…

A: Given reaction: NH4+(aq) + NO2-(aq) → N2(g) + 2H2O(l) We have to find the rate law equation. Also,…

Q: 1) Br2, H20 2) NaH 3) H*, CH3OH g) OH H2SO4 (conc) low [H2O] LEASTAAS h) 1. МСРВА 2. CH3MGB 3. H3O*

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Q: Calculate the standard reaction enthalpy for the reaction between CIF3 and O2. 2CIF3(g) + 202(g) →…

A: The enthalpy change of any reaction is defined as the difference between the enthalpy of the…

Q: H.W) When 178 J of energy is supplied as heat to 1.9 mol of gas molecules at constant pressure, the…

A: Given,  Energy, Q = 178 J  Number of moles, n = 1.9 mol  Change Temperature, ∆T = 1.78 K

Q: 16. What is the pH of an aqueous solution at 25.0°C that contains 3.98x10-9M  hydronium ions H+ ?…

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Q: KI ANANO, 140 130 KNO, 120 110 100 90 80 NH,CI 70 -HCI 60 KCI 50 40 NaCI 30 KCIO, NH, 20 10 SO2 10…

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Q: When mixing which of the following pairs would you expect to have two hydrolysis reactions written?…

A: Answer: Hydrolysis reaction is the type of reaction in which conjugate base of weak acid furnishes…

Q: Enter your answer in the provided box. A rock sample originally contains 3.21 mg of 238U. How much…

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Q: The crystal structure of [Cu(H2O)6]2+ displays axial bond lengths of 238 pm and equatorial bond…

A: The shape of transition metal complexes is determined by the tendancy of electron pairs to occupy…

Q: Taking into account significant figures, how is the number 0.004100 written in scientific notation?…

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Q: 9) Polyatomic ion X can react with calcium to form a compound with the general formula CazX2- Which…

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Q: For a certain reaction changeH֯ =-83.5 kJ and changeSͦ =-148 j/K. If the values of changeH֯ and…

A: Answer: Given data: ∆H°=-83.5kJ∆H°=-83500kJ ∆S°=-148J/K

Q: The following skeletal oxidation-reduction reaction occurs under basic conditions. Write the…

A: Consider the given redox reaction, answer the following questions---

Q: Using beer lambert's law solve the ff.  The absorbance of a 1.05x10-5 M Fe+3 solution was…

A: Given,  Absorbance, A = 0.200  Concentration of Fe3+ solution , c = 1.05x10-5 M Length, l = 2.50 cm…

Q: Question 36 Which of the following gases is monatomic? O Okygen O Nitrogen O Argon O Hvdrogen O…

A: Since you have asked multiple type questions, we will solve only first  questions for you. If you…

Q: 9. If the pressure is increased, the reaction will shift to the (left/right), increasing…

A: According to Le Chatelier's principle, when the equilibrium condition is disturbed by any external…

Q: Solution calorimetry was used to study the acid-catalyzed addition of water to 1- butene:…

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Q: Determine the pH at the equivalence point of a titration between 50.0 mL of 0.157 M (CH3)2NH…

A: ( CH3)2NH ( dimethyl amine is a weak base and HClO4 is a strong acid.  At equivalance point moles of…

Q: - 6. CH2CHCH2 (propene or propylene) Projection Drawing: Perspective Drawing: a. Predict the angle…

A: Propene is unsaturated hydrocarbon . In the propene molecule two types of carbon present carbon(c1)…

Q: 41) [CLO-5] In the titration of 30 ml of 0.2 M of sodium Oxalate (Na;Ox, or NaOOC-COONA) with 0.3 M…

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Q: 4. a) Draw and label the E and Z isomers of 3-methyl-2-pentene: CH,CH=C-CH,CH, b) Draw the all the…

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Q: How many coffee beans can you buy if you spend $(2.3000x10^2)? Each coffee bean weighs (1.60x10^-1)…

A: Known Weight of each coffee bean = 1.60 ×10^-1 gram 1 bag coffee contains 454 g coffee beans . Cast…

Q: Which of the ff. terms are correctly defined? I. Resonance fluorescence is the resulting emission…

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Q: What is it called when the final temperature of your Solid (Tin) and the water are equal?

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Q: 10. Which of the following effects shifts equilibrium to the left? A) temperature change B) add…

A: Given that, an equilibrium reaction is CH4(g) + 2H2S(g) CS2(g) + 4H2(g). We have to tell among the…

Q: Q) When 3.0 mol O2 is heated at a constant pressure of 3.25 atm, its temperature increases from 260…

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Q: The Haber-Bosch process is used to produce ammonia from nitrogen gas and hydrogen gas. When 2.00 mol…

A: Answer: Limiting reagent in a chemical reaction is the substance that theoretically exhaust first…

Q: 4. 448 Joules of heat are required to raise the temperature of a 10 gram sample of metal from 10…

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Q: The equilibrium constant K for the overall reaction that takes place in the cell Pt|Sn2+,…

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Q: H.W) When 178 J of energy is supplied as heat to 1.9 mol of gas molecules at constant pressure, the…

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Q: 2. Which of the following compound are identical? ||||| II|| а. -С-С-С-С-СI T I|| e. -C-C-C-C-C-CI T…

A: You have given too many questions but I have solved only first one. If you want more please upload…

Q: 18. A 0.0035 M aqueous solution of a particular compound has a pH = 2.46. The compound is: A) a…

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Q: What compound results is the 1,2-addition product of the reaction below: 1 mol HBr 1-bromo-1-butene…

A: This question done via Electrophilic addition reaction. Mechanism have mentioned below-

Q: A) Indicate the most acidic proton on each molecule. B) Rank in order from least to most which are…

A: Here we have to write the correct order of decreasing acidic strength of the following compounds and…

Q: Calculate the standard enthalpy for the following reaction at 25°C: C(graphite) + H2O(g) → CO(g) +…

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Q: The reaction A 2 B is performed at two temperatures and the equilibrium constant determined. At…

A: Here we have to predict the true statement among the following statements for the given equilibrium…

Q: If the intensity of radiation from a radioactive sources is 6.1 units at a distance of 6.3 m, how…

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Q: 2. Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2N02 ----- 2NO + O2 In…

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Q: Explain the would be effects (if any) of the following considerations: a. Water sample was made to…

A: In MODIFIED WINKLER METHOD , 1. If we leave the water overnight, We may get error result. As we…

Q: During work with a radioactive source, a worker was told that he would receive 45 mrem at a distance…

A: Given: During work with a radioactive source: worker receive 45 mrem at a distance of 7.0 m during…

Q: 5. Complete and balance the following redox equation. What is the coefficient of H;O when the…

A: oxidation-reduction reaction, also called redox reaction, any chemical reaction in which the…

Q: Exercise// A sample consisting of 2.00 mol of perfect gas molecules, for which Cy,m=5/2R, initially…

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Q: 2. Find the wavelength of the light emitted when a 1.560 × 10-27 g particle in a 3.600 Å one…

A: We would use formula to calculate energy of one dimensional box. Form this we calculate energy of…

Q: Shania looks for the conjugate acid-base pairs. Which of the following is the conjugate base of…

A: Which of the following is connugate base of CH3COOH ?

Q: For the reaction of NO with Br,, the following data was obtained. Use the data below to determine…

A: Detail calculation is shown below

Q: Which one of these dienes is least stable? H3C C=c=c H3C H CH3 A В D E

A: Isolated dienes: Isolated dienes typically show no "special" stability. Their two π-bonds interact…

Q: Provide the chemical formula (including brackets where appropriate) or systematic name for the…

A: Given : Number of molecules of molecular chlorine = 5 x 1023

Q: For the following redox reaction: Fe2+ (aq) + Mg (s) 2 Mg2+ (aq) + Fe(s) a. Identify the oxidation…

A: Given reaction is  Fe2+(aq) + Mg (s) → Mg2+(aq) + Fe (s) We know that standard reduction potential…