1. Briefly define the following terms. (a) Anode and cathode (b) Reference electrode (c) Standard Hydrogen Electrode (SHE) (d) Reduction potentials (0) Salt bridge

Q: calculate the mass percent of methanol in a solution containing 2g. of methanol with 240g of water.

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Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

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Q: View Available Hint) O Oumosis ocours when the solvent moleculea move from asolution of higher…

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Q: Ammonia (NH3) serves as a/an --- when treated with water to produce an ammonium ion (NH4+) and a…

A: Given :- NH3 + H2O → NH4+ + OH-  To determine :- nature of NH3 molecule in above reaction i.e.…

Q: This question deals with the vapourization of isopropyl alcohol: CH3CH(OH)CH3(/)= CH3CH(OH)CH3(g)…

A: Given-> Boiling point(T) = 355.5 K ∆vapH° = 39.86 KJ/mole

Q: 14. In a mixture of 2.15 mol of gas, 0.85 mol are nitrogen (N2) molecules. What is the mole fraction…

A: Since you asked multiple questions so as per Q&A guidelines of portal I solved first question…

Q: A waste heat exchanger is used to absorb the energy from the complete combustion of hydrogen sulfide…

A: Mass of hydrogen sulfide = 12 kg = 12×103 g (1 kg = 103 g) Change in temperature, ΔT = 52 °C Molar…

Q: Which of the following bond is polar covalent bond? electronegativities: F = 4.0, Cl = 3.0, O =…

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Q: condensat ion HO-CH2-CH3 HO-C-CH2-CH3

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

Q: Use Le Chatelier's Principle to answer the questions about the following reversible reaction: N2O4…

A: ->According to Le-chatelier principle if equilibrium is disturbed by changing factors or…

Q: Select the major product of the following reaction. 1. NaOEt/ E1OH + 2. Н,О Ph Ph II I Ph Ph III IV…

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Q: Determine systematic name of HBr(aq). A.) selenide ion B.) bromic acid C.) hydrobromic acid D.)…

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Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

A: Given Half life (t1/2) = 78.2 hours Initial amount (N0) = 45.7mg  Time (t) = 193 hours Radioactive…

Q: Which of the following is a means of creating a buffer of H2CO3/NaHCO3? A) Mixing 10 mL of 1 M HNO,…

A: -> Buffer contain weak acid or weak base with their conjugate base or conjugate acid…

Q: A generic salt, AB, has a molar mass of 319 g/mol and a solubility of 8.20 g/L at 25 °C. AB(s)…

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Q: Question 1 Identify the correct statements consistent with the following scenario: 1. Heat is lost…

A: The correct statements have been marked in the following step.

Q: 20. Gas A has a greater molar mass than gas B. What is true about their rates of effusion? a. Gas A…

A: Rate of effusion is inversely proportional to the molar mass of that component.  Higher the molar…

Q: 21. Which radical is less stable? CH CH, CH CH CH 1 3.

A: we need to determine the less stable radical

Q: How many g of Ca reacted?

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Q: CH3 CH3 1. BH3, THF 2. NaOH, H,O, Н-02 H3C CH2 H3C Alkenes can be hydrated via the addition of…

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Q: What amount of heat, in kJ, is required to vaporize 188.15 g of ethanol (C,H OH)? (AHvap = 43.3…

A: Given, mass of ethanol (C2H5OH) = 188.15 g ∆Hvap = 43.3 kJ/mol Amount of heat (in kJ) required to…

Q: 1. Name this compound: HOCCHCH3 ÓCH3

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Q: Give an explanation of the semi-empirical mass formula and its symmetry term

A: The answer is given below

Q: A lactic acid/sodium lactate (HC3H5O3/NAC3H5O3) buffer is prepared to 0.104 mol L-1 HC3H5O3 and…

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Q: How many molecules are in 3.1x10^-3 g of C9H8O4?

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Q: An electrochemical cell is based on the following two Compute the cell potential at 25 °C.…

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Q: 10. Which of the following elements would have the greatest difference between the first and second…

A: The element which has the greatest difference between the first and the second ionisation energies…

Q: 2. Draw the Lewis dot structure for each of the following molecules or ions. Determine the number of…

A: Lewis structure is the representation of bonding electrons and non bonding electrons. Bonding…

Q: Calculate the final temperature, in degrees Celsius, for each of the following, if VV and nn do not…

A: Argon is an ideal gas. Ideal gas equation will be used to find out the final temperature.

Q: Beginning with the correct organic halide and benzophenone show how one would prepare…

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Q: Diethylamine (structure presented below) and HCl react to produce CH3 CH3 diethylammonium chloride…

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Q: A carboxylic acid is named in the IUPAC system by replacing the e in the name of the parent alkane…

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Q: A sample of helium gas has a volume of 6.30 L at a pressure of 825 mmHg and a temperature of 21∘C.…

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Q: Calculate the concentration of all the ions in solution after mixing 100.0 mL of 0.0200M KF (aq)…

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Q: please indicate where the arrows should how many electrons they carry with them go and CH3 CH3 1.…

A: The step of mechanism has been solved in the following step.

Q: Name this compound.

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Q: For each of the following, write a balanced chemical equation for each double displacement reaction.…

A: Since you have asked multiparts questions, we will solve the first three sub parts questions for…

Q: When transferring liquids, which liquid will you read the top of the meniscus?

A: To explain: while transferring liquid, which liquid reading should be taken.

Q: A student is given a 0.1 M solution of an acid and is asked to determine whether it is a solution of…

A: Given: Concentration of acid = 0.1 M And the pH of the solution = 2.3

Q: Chemistry Question Explain how you could use column chromatography to separate o-nitroaniline from…

A: Adsorbent: Silica gel.   Solvent: hexane: ethyl acetate   Compound elute first: o-nitroaniline

Q: Which of the following methods would be successful in producing the product starting from the given…

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Q: t follows that at equilibrium: mg of CuCl will exist in one liter of solution as a precipitate mg of…

A: Given, Molar mass of CuCl = 99 g/mol Solubility of CuCl = 4.15×10-4 M Volume = 1.0 L Solubility =…

Q: Which compound gives brick red precipitate of cuprous oxide with Benedict's solution? *   a.…

A: Ketones will give negative test to Benedict solution.

Q: 8- Arrange the following compound according in increasing melting point: KCI, He , H2O, HF A) Kcl >…

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Q: QUESTION 36 In a calorimetry experiment, a 1.03 g sample of naphthalene (C 10H 8; heat of…

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Q: 48- A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water, the density of resulting…

A: Molality is defined as numbers of moles of solute divided by mass of solvent in kg .

Q: What is the binding energy in kJ/mol nucleons for lanthanum-138? |k]/mol nucleons 57 H+ 81;n La The…

A: The reaction given is, =>

Q: A solution contains 0.0140 M Pb2+(aq) and 0.0140 M Sr2+(aq). If you add SO2−4(aq), what will be the…

A: Ion that has lower value KSP , will precipitate first as its ionic product will overcome the KSP…

Q: HO3S- -CH3 Br CH3

A: Detail mechanistic pathway is given below to carry out the conversion

Q: Excess Raney Ni, H2

A: Answer