Which of the following statements regarding the Law of Thermodynamics is false? The entropy of the universe decreases in a spontaneous process. The entropy of a perfect crystalline substance at 0°C is zero. All of these Energy can be created or destroyed. It can be converted from one form to another.

Q: A 3.9 g of KCr(SO4)2.12H₂0 was heated until reach a constant mass. Calculate the mass in grams of…

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Q: 2. Name each alkyne. CH3CH₂CH₂C=CH a. b. CH3CH₂CH₂C=CCH3 3. Predict the product of the following…

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Q: The following reaction is allowed to reach equilibrium. Cu₂ O(s) + CO(g) = 2 Cu(s) + CO₂(g) Which of…

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Q: QUESTION 20 Which of the following ketones would be the best choice to use for a crossed aldol…

A: In Cross aldol condensation reaction:- 1st step is acid base reaction in which enolate formed.

Q: nd the pH of the solution when 0.0200 M an amino acid (NH: "RCOO) is titrated to the equivalence…

A: find the pH of the solution

Q: Which of the following choices would indicate that your sample was relatively pure? (Select all that…

A: How to decide purity of sample by melting point .

Q: (a) Consider the electronic states So and S₁ of a diatomic molecule for which re' (S1) > re" (So),…

A: S0 is singlet ground state  of a diatomic particle.S1 is singlet excited state of a diatomic…

Q: When a substance undergoes reduction... a) its oxidation number increases. Electrons are a reactant.…

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Q: Please provide clear steps! Thank you in advance! a) MeO OMe O n-Buli (HMPA) OMe 1. NaH (DMF/PhH) 2.…

A: Since you have posted multiple questions we will answer the first one for you. To get the remaining…

Q: Dicarboxylic acids have two pKa's. For maleic acid (cis-2-butenedioic acid) these are pka¹ = 2.0,…

A: This can be explaine on the basis of the geometric representation of maleic acid and fumaric acid.

Q: 21. Which of the following is the repeating unit in poly(vinyl chloride) (PVC)? CI CI H # A B ΤΟ CI…

A: Here we are the repeating unit in Polyvinyl chloride (PVC) from the givenamong options.

Q: The reaction of butadiene gas (C4H6) to yield C8H12 gas is described by the equation: 2  C4H6(g)…

A: Recall the "dimerization" reaction of butadiene C4H6 -              2 C4H6 g   →   C8H12 gThe…

Q: Perform the following to determine the pH of a lactic acid solution. Write the acid/base reaction…

A: pH is negative logarithm of the hydronium ion concentration in a solution. Its value ranges from…

Q: Compound A has molecular formula C7H7X. Its ¹H-NMR spectrum shows a singlet at 2.26 ppm and two…

A: 1H-NMR spectroscopy is used to identify the complete structure of the unknown compound. From the…

Q: 3 7 5 6 3 4 ACROSS 1- light nuclei fuse together to form to a heavier nucleus 2- subatomic particle…

A: ACROSS 1) NUCLEAR FUSION When two small, light nuclei meet and fuse together to form a heavier…

Q: Above what temperature does the following reaction become nonspontaneous?         2 H2S(g) + 3…

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Q: The brick-red color observed when Benedict's test is applied to D-mannose is due to the reduced form…

A: -> Benedict's tast is a chemical test that can be used to check for the presence of reducing…

Q: Show the calculation of the volume of H₂O gas formed by the combustion of 18.6 grams of C6H6 at 30°C…

A: Given: Mass of benzene = 18.6 g Pressure = 1.10 atm Temperature = 30oC = 273+30K=303 K Known: Molar…

Q: Which of the following has 2 quaternary carbon atoms? O2,2,7,7-tetramethyloctane O…

A: Classification of carbon on the basis of carbon atom attached to the another carbon atom: Primary…

Q: Draw the mechanism for Llle Lll աայււմ 11 i) This mechanism requires 6 steps. ii) Make sure you draw…

A: Proper reaction mechanism of following  reaction are as follow.

Q: How are elements heavier than helium formed in the stars, particularly until iron?  How are elements…

A: The chemical element helium has the atomic number 2 and the letter He in its name. It is the first…

Q: Fe (s) + O2(g) + 2H2O (l) → Fe3+ + 4OH- Balance the  simple redox reaction, If the standard change…

A: Oxidation is the loss of electrons and reduction is the gain of electrons.

Q: What is the molecular formula of an alkane that has twenty-two carbon atoms? a. C23H46 b. C22H46 c.…

A: As we know , in organic compounds  Alkane is containing a n. No.of carbons then it's corresponding…

Q: The normal boiling point for acetone is 56.5°C. At an elevation of 5600 ft, the atmospheric pressure…

A: INTRODUCTION: we use clausius clapeyron equation that relates the relationship between vapour…

Q: Formic acid has uses in preservatives, cleaning agents, beekeeping and a growing list of potential…

A: As formic acid is a weak acid and it is reacted as followed,

Q: CHEMWORK Which compound(s) exhibit only London dispersion intermolecular forces? (Select all that…

A: In the given question we have to choose the compound which exhibit only London dispersion…

Q: _____ In the expression of the chemical formula 2Al Cl3, the 2 is a coefficient and the 3 is a…

A: Given statement:: In the expression of the chemical formula       2AlCl3, the 2 is a coefficient and…

Q: Of the following, which compound has the highest boiling point? a. Hexanoic acid b. 1-Hexanol c.…

A: Boiling point: The boiling point of a liquid is defined as the temperature at which the vapor…

Q: An aqueous solution of an amino acid with a dissociable side chain is found to have the following…

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Q: What is the molarity of a solution prepared by diluting 25.0 mL of 0.412 M magnesium nitrate to a…

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Q: What are the correct reaction conditions for the following transformation? HO ОН ОН CrO 3, H3O+ None…

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Q: What is the pH of a solution with [H3O+] of 1.9 x 108 M?

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Q: 4. A 50.0 g sample of argon (39.95 g/mol) is placed in a container of 0.925L at 325K. a. Calculate P…

A: #4.(a):  Given the mass of Argon gas taken = 50.0 g  Volume of the container, V = 0.925 L…

Q: Ethyl benzoate PhCO₂Et has these peaks in its 13C NMR spectrum: 17.3, 61.1, 100- 150 (four peaks)…

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Q: Explain briefly the types of coal and draw a diagram.

A: COAL :  The sedimentary rock known as coal is blackish or brownish-black in colour and formed from…

Q: why is the 0.000876 amu not negative

A: In nuclear reactions reactant nuclides lost some amount of mass which is converted into energy.

Q: how can we clasify glass is it organic or inorganic compound?

A: Glass is an inorganic solid material which is generally translucent or transparent. It is also hard,…

Q: Draw the structure of the stereoisomer of ephedrine where its two stereogenic centers are of R…

A: Given compound is ephedrine. R configuration means clockwise rotating arrow from group of higher…

Q: 2req ts 2req ts 2req ots 2req Visited pts 2req pts 2req pts 2req [Review Topics] Specify the formal…

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Q: Provide the complete mechanism using Curved Arrow Formalism for the reaction of…

A: Please find the attachment.

Q: Complete the Reaction below and provide the following (i) a detailed stepwise mechanism to account…

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Q: C4H6O3), which has a molar mass of 102.04 g/mol. The density of acetic anhydride is 1.082 g/mL.…

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Q: gravity filtration

A: Gravity filtration – Gravity filtration is a method in which most of the work is dependent on…

Q: Draw the product generated in the reaction shown below and name the functional group generated. CH3…

A: For the given reaction, we can expect a condensed product and the number of 1H and 13C signals for…

Q: 4:2:4 PPM

A: Answer. Spectra IR and NMR gives us an insight about the type of functional groups present and types…

Q: 3 In which of the following reactions will Kp = Kc? * 3A (g) + 2B(g) = 4E(g) + 6D(g) O A(s) +2B(g) =…

A: The relationship between Kp and Kc: Kp = Kc(RT)∆n Where, Kp = Equilibrium constant in terms of…

Q: Show the complete mechanism using Curved Arrow Formalism for the reaction scheme below in acidic…

A: In the given question we have to complete the mechanism in acidic conditions and name the functional…

Q: Provide the complete mechanism using curved arrow formalism for the reaction of p-chlorobenzonitrile…

A: A. Nitrile group is -CN cyano group which under acidic hydrolysis gives carboxylic acid, -COOH.  B.…

Q: Which of the following statements concerning entropy change is/are true? 1. For a spontaneous…

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Q: Show the complete mechanism using Curved Arrow Formalism for the reaction of the compound shown…

A: INTRODUCTION: p-chlorobenzaldehyde reacts with EtOH and HCl to give an acetal.