e enthalpy change (AH)

Q: llowing questions as part of your lab report: 1. A standardized KMNO4 solution can be used to analys...

A: A standardized KMnO4 solution can be used to analyse compounds of unknown composition. One such comp...

Q: 100 4000 3500 3000 2500 2000 1500 1000 500 Cm- 히1342- 2955 1455- 1373- 1326- 1102-

A:   Degree of unsaturation=2C+2+N-H-X2C= no. of carbons.N= no. of nitrogens.H = no. of hydrogens.X = n...

Q: Determine the indices of the crystallographic direction shown below. Express in proper notation.

A:

Q: If you need to make 600mL of a 0.150 M NaF solution, how many grams of NaF (Molar Mass: 42g) would y...

A: Given: The volume of the NaF solution = 600 mL Molarity of the NaF solution = 0.150 M The molar mass...

Q: 8a) Show the mechanism for the radical reaction of pentene 3-methylhexane with Br2 in the presence o...

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Q: How would you carry out the following reactions? (a) CHJCH2C=CH CH3CH3CCH, (bi CH,CH2C=CH CH3CH2CH2C...

A: Since you have posted a question with multiple sub-parts,we will solve first three sub-parts for you...

Q: Given are the pairs of alcohols than can be differentiate using Lucas Test EXCEPT? i. (isopropanol ...

A: Lucas test is used to distinguish primary (10 RCH2OH ), secondary (20 R2CHOH) and tertiary (30 R3COH...

Q: Calculate the amount of phycocyanin in Sample 1 in mg where A620=0.211   and A650=0.086, taking into...

A: Phycocyanin is a protein-pigment complex that belongs to the family of phycobiliprotein. It is a wat...

Q: 22. What is the wavelength of light emitted when the electron in a hydrogen atom undergoes a transit...

A: The correct answer is given below

Q: [OH"]

A:

Q: look for at least three extraction methods for perfumery materials.

A: There are several methods which are used for extraction of the perfumery materials from different su...

Q: In the reaction: BCI3 + NH3 The Lewis acid is: (c) B-NH3 1. O cr O H,O O H O NH3 BCly

A: A Lewis acid is a chemical species which has an empty orbital in which it is able to accept electron...

Q: Iron and water react to form iron(III) oxide and hydrogen, like this: 2 Fe(s)+3 H,O(g)→Fe,O3(s)+3 H,...

A: The equilibrium constant of a chemical reaction is the value of its reaction quotient at chemical eq...

Q: Indium reacts with chlorine to form InCl3. In the balanced equation for this reaction, the coefficie...

A:

Q: Give the IUPAC name using 1993 recommendations for organic nomenclature.

A: The IUPAC name of the compound can be written on the basis of the number of carbon atoms in the main...

Q: volume

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Q: Cycloheptatrienone is an unusually stable ketone. Draw an aromatic resonance structure that explains...

A: Draw resonance structure and then give the reason of stability.

Q: Which amino acid can participate in electrostatic interactions? "HN- -CH CH "HN-CH- "HN- -CH- CH, HN...

A:

Q: Arrange the following oxoacids in order of decreasing acid strength: HCIO, HCIO2, HCIO3, HBrO

A: Acidic strength is directly proportional to electronegativity  of the central atom. So HBrO is least...

Q: concentration

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Q: The diagram below represents an operating electrolytic cell used to plate silver onto a nickel key. ...

A: Given cell is an electrolytic cell. In the electrolysis, silver is coated on a Nickel key. In electr...

Q: Wine goes bad soon after opening because the ethanol (CH,CH,OH) in it reacts with oxygen gas (0,) fr...

A: The balanced equation is as:-  CH3CH2 OH + O2 ---> H2O + CH3COOH 

Q: Calculate the [H*] in a solution that is 0.15 M in NaF and 0.10 in HF. (Ka = 7.2x 10-4) %3D 7.0 x 10...

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Q: Mass Solution Volume Solute (if liquid) 20 % by volume, 50 mL NaCI solution

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Q: 5.32 A sample of sodium-24 with an activity of 12 mCi is used to study the rate of blood flow in the...

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Q: Determine the pH of a 0.373 M aqueous solution of ammonium chloride at 25 °C. The K, for ammonia is ...

A:

Q: . A mixture consisting of 0.130 mol N2, 0.215 mol O2, 0.100 mol CH4, and an unknown amount of CO2 oc...

A:  Given :-  Pressure = 1.09 atm  Volume = 18.90 L  Temperature = 25°C  No.of.moles of N2 = 0.130 mol ...

Q: Aqueous sulfuric acid (H,SO,) reacts with solid sodium hydroxide (NaOH) to produce aqueous sodium su...

A:

Q: 1. It will define the following terms: to. molality b. Colligative properties C. nonvolatile solute ...

A: We have to  define the following terms: to. molality b. Colligative properties c. nonvolatile solute...

Q: How do we make

A:

Q: Which one of the following compounds is considered as Alum? O a. NazSO4 b. NaAl(SO4)2.6H20 Oc. CaSO,...

A: Alum is a double salt of aluminum that contains aluminum, and a monovalent cation and sulfate anion.

Q: What is the molecular polarity of NCI3? Non-Polar Molecule O Polar Molecule

A: The correct answer is given below

Q: 1. Which of the following is NOT true about equivalence point and endpoint? a.The endpoint is marke...

A: At the equality point of a titration, a precisely comparable measure of titrant has been added to th...

Q: Which of the following will immediately produce a layer after the addition of Lucas Reagent?  a. m...

A: A solution of anhydrous zinc chloride in concentrated hydrochloric acid is known as Lucas’s reagent....

Q: 1. What is a pharmacopoeial monograph? Give one example and its structure

A: Answer - Pharmacopoeial monograph - A pharmacopoeial monograph is a compiled data about Active Pharm...

Q: Acetic acid (HC2H3O2) is a weak acid (Kg 1.8 x10). Calculate the pH of e 17.6 M HC2H3O2 solution. 1 ...

A: Acetic acid is a weak acid which dissociates partially .Alpha is degree of dissociation.

Q: Q1/A) A mixture 300 kmole has the following composition by mole :- (C.H10 20% , CsH12 30%, CH14 20%,...

A:                Total moles of gaseous mixture = 300 kmole                                           ...

Q: O2 behaves as a van der Waal's gas. Given Tc=154.8K, Pc=50.8 bar, Zc=0.3008. Compute for the followi...

A:

Q: Give the IUPAC name using 1993 recommendations for organic nomenclature.

A: The IUPAC name of the compound can be written on the basis of the number of carbon atoms in the main...

Q: Calculate the number of atoms per cubic meter in lead. The density and atomic weight of lead are 11....

A: Given,  The density and atomic weight of lead are 11.35 g/cm3 and 207.2 g/mol and the Avogadro's num...

Q: Calculate the pH of a 7.51 M solution of HBRO. The K, of HBRO is 2.50 x 10. Express your answer usin...

A: The PH of HBrO can be calculated as follows

Q: mass of water

A:

Q: A mixture of 0.560 g BaCl, 2H2O (molar mass = 244.2g/mol) and 1.44 g of NazPO4 12H20 (molar mass = 3...

A: 2Na3PO4 + 3BaCl2-----> Ba3(PO4)2 (s) + 6NaCl Mass of BaCl2.2H2O = 0.560 g Molar mass of BaCl2.2H2...

Q: e mass percent

A:

Q: Balance the following equation in basic solution using the half reaction method. I- + Ce4+ → IO3- + ...

A: I- + Ce+4 -----> IO3- + Ce+3    

Q: Test III. Problem Solving Direction Answer the following. Show a complete solution for the mathemati...

A: Number of moles of aluminium sulfide = 8 moles  Number of moles of water = 12 moles 

Q: 4. How should we test appearance of solutions?

A: We have to tell the test of appearance of the solutions. We know that a solution is a homogeneous mi...

Q: Green plants use light from the Sun to drive photosynthesis. Photosynthesis is a chemical reaction i...

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Q: energy, in J, is

A:

Q: Give the product(s), including all stereoisomers, of the reactions below. Is the product mirture opt...

A: