How to determine the number average molecular mass of a polymer by: 1. Gel permeation chromatography. 2. Viscometry. 3. Vapor pressure osmometry. 4. End-group determination.

Q: Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy…

A: Given, C(s, graphite) + 2Cl2(g) ➝ CCl4(g) Species                              S° C(s, graphite)…

Q: How many moles is each of the following? 15.5 g SiO2 0.0688 g AgCl 5.96 g KOH 937 g Ca(C2H3O2)2

A: Number of moles = mass molar mass 1) 15.5 g SiO2

Q: A blood concentration of 0.065 M ethyl alchohol is sufficient to induce a coma. Blood alcohol…

A: Given: Concentration of alcohol = 0.065 M a) Given: Volume of blood solution = 5.6 L

Q: What is the pH of a 4.28x10-5 M solution of the strong acid HCIO47 HCIO4(aq) + H₂O(l) → CIO4 (aq) +…

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Q: Example 9. In an electrolysis experiment, a current was passed for 5 hours through two cells…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: When light with a wavelength of 207 nm strikes the surface of tin metal, electrons are ejected with…

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Q: se Titration Curve 14 12 10- DH 8- 6 2 0 8 12 Titrant Volume (mL) 16 20

A: ★ Answer : Correct option is 5.00 mL ★ solution :

Q: Predict the product(s) formed when tripalmitolein is treated with each of the following reagents:…

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Q: What type(s) of intermolecular forces must be overcome when liquid dipropyl ether (CH3CH₂CH2-O-…

A: Given : We have to tell what type of intermolecular forces overcome when ether is heated.

Q: Using a graphical approach, solve for the pH of the following solution: 10-3 M (NH4)2CO3

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Q: Sam wanted to perform a chemical reaction using 8.22 moles hydrogen gas and 4.11 moles of oxygen gas…

A: To Calculate mass from moles , we would use formula :  Mass = Moles × Molar mass

Q: Krypton-81 has a half-life of 2.29 × 105 years. A 750-mg sample of Krypton-81 undergoes electron…

A: Since you have posted a question with multiple sub-parts as per our company guidelines we are…

Q: ve submitted yo X G traductor inglés españc x Tn Course: CHM 2045/LEC X Course Home X…

A: Balanced equation is the equation in which equal number of atoms of each element are present on both…

Q: 24-38. Use the method of half half reactions to balance the following equations: (po)010 (2) (HO)10…

A: The reactions given are, a) N2H4 (aq) + Cu(OH)2 (s) → N2 (g) + Cu (s)…

Q: Consider the following redox reaction under standard conditions: 2 Li+ (aq) + Fe (s) → Fe2+ (aq) + 2…

A: Given cell reaction, 2 Li+(aq) + Fe(s) → Fe2+(aq) + 2 Li(s)

Q: 1. 2 Class of compound Name Structure H H O CH₂

A: To determine claas of compound , we would check the hetero-atoms present .  To write name we would…

Q: What qualitative tests can be done to test for the presence of vitamin A? Discuss the test in…

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Q: 5. Specify which of the following equations represent oxidation-reduction reactions, and indicate…

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Q: Molecular Shape Practice For each of the following: 1.) Draw the Lewis structure. 2.) Make sure the…

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Q: and A certain metal M forms a soluble nitrate salt M(NO), Suppose the left half cell of a galvanic…

A: Electrochemical cell is the concentration same in which the same metal act as anode and cathode…

Q: Write both an equation using lewis structures and a balanced chemical equation for the reaction…

A: In this question, we have to write both an equation using lewis structures and a balanced chemical…

Q: A chemist must prepare 750. mL of 240. mM aqueous sodium carbonate (Na₂CO3) working solution. He'll…

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Q: For the reaction H2S(g) + 2H2O(l)3H2(g) + SO2(g) H° = 295.4 kJ and S° = 294.7 J/K The standard…

A: Given: ΔH = 295.4 KJ = 295400 J                                         (Since 1 KJ = 1000 J) And ΔS…

Q: A chemist prepares a solution of zinc oxalate (ZnC₂04) by measuring out 0.0029 µmol of zinc oxalate…

A: Given :-  No.of moles of ZnC2O4 = 0.0029umol  Volume of solution = 150. mL  To calculate :-…

Q: 8. C,H,O (aldehyde) 100- 80- 60- 40- 20 O 20 20 30 40 144 50 58 60 80 86 90 m/z 100

A: Molecular formula : C5H10O. (DBE = 5-(10/2)+1 = 6-5 = 1. Therefore compound name is n-pentanal.…

Q: Based on the first step of a mechanism shown, identify the correct relative reaction path diagrams…

A: In this question, we have to identify the correct relative reaction path diagram for the two…

Q: Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy…

A: Calculate the standard entropy of the given reaction--

Q: cocft H~= COLE! وضوع : 2

A: Hantzch synthesis

Q: QUESTION 7 What type of bonding is present in NaCl? O A. polar covalent. O B. nonpolar covalent. O…

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Q: The pH of 0.125 M Na2X is 11.15 and the pH of 0.125 M H₂X is 2.55. Calculate pKai and pKaz for H₂X.

A: Given: pH of 0.125 M Na2X = 11.15  And pH of 0.125 M H2X = 2.55

Q: The half life of the radioactive element ubtonium-31 is 10 seconds. If 80 grams of unobtanium-31 are…

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Q: The K₂ for a base is 15.3 x 10-13. What is the Ka for its conjugate acid?

A: Given :- kb for a base = 15.3 × 10-13  To determine :- value of Ka for its conjugate acid

Q: Select the statements below that are true: O b. The enthalpy of the reactants cannot be directly…

A: Answer: Enthalpy is the total heat content of the system. It basically involves the internal energy…

Q: DMSO KOt-Bu KBr + major product & NaCl a = Electrophilic addition d = SN2 Nucleophilic substitution…

A: The mechanism carried out in the given reactions are:

Q: lid potassium carbonate is slowly added to 75.0 mL of a cobalt(II) fluoride solution until the…

A: Given : Volume of cobalt(II) fluoride = 75.0 mL Concentration of carbonate = 0.0578 M

Q: you begin with 78.2 mL of 0.725 M KCl(aq) solution and mix it with 67 mL of 0.721 M Pb(NO3)2(aq) ,…

A: Given-> Volume of KCl= 78.2 ml Molarity of KCl = 0.725 M Volume of Pb(NO3)2(aq) = 67 ml Molarity…

Q: 28. After electrolyzing a certain concentration of copper sulfate solution with an inert electrode…

A: Given the solution taken for electrolysis is copper sulfate, CuSO4. Moles of [Cu2(OH)2CO3] added to…

Q: MENIN MENAMPANG WIPERKINS AVAN Propose a product for the following reaction: CH3 0 CH2 CH₂ H₂C…

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Q: synthesize o form of acetaminophen from benzene

A: synthesis of acetaminophen from benzene is given below

Q: Calculate the standard change in Gibbs free energy for the reaction at 25 °C. Standard Gibbs free…

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Q: What is the emf of a galvanic cell consisting of a Cd²+/Cd half-cell and a Pt/H*/H₂ half-cell at the…

A: Given that,  A Galvanic cell has two half cells Cd2+/Cd and H+/H2 We need to find emf of the…

Q: Calculate the solubility at 25 °C of BaCrO4 in pure water and in a 0.0080M BaCl₂ solution. You'll…

A: In this question we have to tell the solubility of BaCrO4.

Q: Determine the limiting reagent and theoretical yield of the product if one starts with 5.0 grams of…

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Q: 4. Which one of the following characteristics is associated with adsorption? (a) AG and AH are…

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Q: Consider the reaction: 2H2O(l)2H2(g) + O2(g) Using standard absolute entropies at 298K, calculate…

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Q: A sample of an unknown compound is vaporized at 100. degrees C . The gas produced has a volume of…

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Q: 10. Consider the reaction coordinate diagram for the reaction of HNO3 with KOH. 60 50 40+ 30 20- lo…

A: Given, At temperature , T=298 KInitial rate of reaction , r = 0.00125Ms[HNO3]=0.010 M[KOH]=0.050 MAt…

Q: Which is not a natural contaminant of water A. Gases including nitrogen, oxygen, radon, non-metal…

A: 2) the natural contaminant of water doesn't include industrial sewage.

Q: What is the concentration (in molarity) of CaCl2 in 215.3 mL of aqueous solution containing 4.39…

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Q: The salt bridge in a galvanic cell allows the soltuions in the half cells to remain electrically…

A: In this question, we have to choose the correct option regarding salt bridge.