When determining the nitrogen content by the Keldal method, after mineralization, nitrogen is present in the sample in the form of Choose one answer: O a. ammonium hydroxide (NH4OH) b. sodium nitrate (NaNO3) c. nitrogen oxides (NO, N20, NO2) O d. ammonium hydrosulfate (NH4HSO4)

Q: 4. Br MeO Meo Me 5. Me Meo

A: 4. Ylide preparation followed by Wittig reaction. 5. Ylide preparation followed by Wittig reaction.…

Q: Calculate to three significant digits the density of dinitrogen monoxide gas at exactly -10 °C and…

A: Given-> T = -10°C = -10 + 273 = 263 K P = 1 atm

Q: A flavor chemist attempted to isolate and identify the major flavor component of a recently…

A: Given information: Compound 1 has a smaller Rf value (0.2) than compound 2 with Rf value 0.6.

Q: Chemistry CO-Me 10.

A: Reaction 1 : Trans esterification, dehydration of alcohols. C-alkylation.

Q: Give the formula for a simple alkene (no rings). O C,H2n+2 O C,H2n O C,H2n+4 O C,H2n-4 O C,H2n-2

A: Alkene is a type of unsaturated hydrocarbon containing atleast one carbon-carbon double bond.

Q: How many grams of iron(III) chloride are needed to make 250.0 mL of 0.400 M FEC13? (MM FeCl3 = 162.2…

A:

Q: The biochemical degradation of isoleucine goes through the intermediate tiglyl‑CoA, shown as the…

A: Alkene undergo addition reaction with water to give corresponding alcohols. Nicotinamide adenine…

Q: Al + HCI --> AICI3 + H2 a. When this equation is balanced, what is the sum of the coefficients? b.…

A: Note : As per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost…

Q: Select the compound with the higher molar solubility. Mn(OH)2, Ksp = 2.00x10-13 SrC03, Ksp =…

A:

Q: A flavor chemist attempted to isolate and identify the major flavor component of a recently…

A: IR : 3100 cm-1 sp2 C-H stretch, 2950 cm-1 sp3 C-H stretch, 1735 cm-1 carbonyl stretch of ester, 800…

Q: Part B The reaction between potassium superoxide, KO2. and CO2. How many grams of KO2 are needed to…

A: 1 mole = 6.022×1023 (Avogadro's number)  The mass of 1 mole of molecules of a substance is known as…

Q: ny milliliters of 0.134 M Na3PO4 solut

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Q: A student dissolves 20. g of aniline (CH,NH,) in 500. mL of a solvent with a density of 0.83 g/mL.…

A: Given :- mass of aniline = 20.g  Volume of solvent = 500.mL  Density of solvent = 0.83 g/mL  To…

Q: What would be the empirical formula for ionic compound that AxBy  which has a cubic cell unit and…

A:

Q: From the following enthalpies of reaction: -537 kJ H2(g) +F2(g) → 2HF(g), C(s) + 2F2(g) → CF,(g), AH…

A: Given : We have to calculate the enthalpy change for the reaction.

Q: Part A Part complete [OH−][OH−] = 3.8×10−11 MM Express your answer using two decimal places.…

A:

Q: 5. Calculate ΔG° and ΔG750°C for the following reaction 2NO (g) + O2 (g) ⇌ 2NO2(g) which is…

A: The given equilibrium reaction is 2NO (g) + O2 (g) ⇌ 2NO2(g) Give data S°(NO) = 210.8 J/(mol•K),…

Q: What is the frequency of a photon that has an energy of 7.5*10^-32 J ?

A:

Q: Determine the percentage by mass of each element in the following compounds. (Round your answers to…

A: Percentage by mass  = (Mass of element in 1 mole of compound/molar mass of the compound) × 100%…

Q: Which is an oxidation half-reaction? Zn → Zn2+ → Zn<T + 2 e O 2 H2 + 02 → 2 H2O O 2 HCl + Ba(OH)2 →…

A: Oxidation half reaction is the reaction in which only oxidation of the element is shown.  Oxidation…

Q: Question 15 What synthetic goal is achieved by subjecting an alkene to a hydroboration-oxidation…

A: ANS. anti-Markovnikov addition of H2O with syn stereochemistry

Q: 5-3. a. Draw out an empty generic (lollipop shaped) homonuclear diatomic MO diagram like the one…

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Q: 3. Calculate the standard free-energy change ( AG° ) at 25°C for the reaction 2H2(g) + N2(g) =N¿H4…

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Q: Calculate the mass of NaClNaCl in a 45 −mL−mL sample of a 1.4 MM NaClNaCl solution.         Express…

A: We have to find the mass of NaCl present in 45 mL of 1.4 M NaCl solution. Given data; molarity = 1.4…

Q: Design the fellowing synthesis. -> 2. 2-C ethyl-2-one. but an -2-ol

A:

Q: 1. Predict which substance has greater molar entropy. Explain. (a) CH4(g) or CCl4(l) (b) NO2(g) or…

A: The answer of the above mentioned question is shown below:

Q: जर तैकट लाएटकेवकाडलल C a1) ह वकम ome

A:

Q: Given: (V1/n1)=(V2/n2) P1V1= P2V2 (V1/T1)=(V2/T2) P1/T1 = P2/T2 PV=nRT R=0.0821 atm•L/mol•K A…

A: The volume of gas added can be calculated by using Ideal gas equation- PV = nRT

Q: Draw the Lewis structure of PF3 and Plg. Determine which statement best describes the Lewis acid or…

A:

Q: Enter the correct stoichiometric coefficients when the following equation is balanced under basic…

A: Your answer is given below :

Q: At 25 °C, what will favor the forward direction? H2CO3(aq)  +  70 kJ   ⇄  H2O(l)  +  CO2(g)   a.…

A: Diluted the solution will not lead to favour the forward direction. As it is an endothermic reaction…

Q: ve the pushing electrom mechami'sm ? TH3CH2 OH OH catalytic

A:

Q: A primary amine R-NH2 has pKb = 5.65 at 25°C. A buffer solution is made by adding 66.0 mL of 1.55…

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Q: = 24 = 25 F 26 27 = 28 29 = 30 = 31 = 32 = 33 34 35 36 kJ and its normal boiling point is 98. °C.…

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Q: Why is the presence of acid necessary in the reaction of carbonyl compounds with certain…

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Q: Part A Calculate the theoretical yield of C,H;Cl when 140 g of C,Hs reacts with 228 g of Cl2,…

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Q: Which of the following SN2 reactions occur faster and why? a CH3 H2 -C-Br CH;CH,CHBr + OH or H,C-…

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Q: QUESTION 9 Which of the following diols would cleave into two fragments with HIO 4? 3,4-hexandiol…

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Q: CH3 но MCPBA H3C-MgBr CH3

A:

Q: Question 24 Which reagent allows you to convert an alkyne to an alkene with trans stereochemistry? O…

A: Reduction of Alkyne :

Q: Br Meo Meo Me

A:

Q: Which reaction(s) will be spontaneous at all temperatures? Question 23 options: A) 4NH3(g) +…

A: The change in Gibbs free energy (∆G) is given by the relation ∆G = ∆H - T∆S  ∆H = change in enthalpy…

Q: CO,Me

A:

Q: What is [OH−][OH−] in a solution with a pHpH of 8.37?

A: Given :- pH of solution = 8.37  To calculate :- concentration of OH- ions i.e. [OH-]

Q: What islare) the predicted productis) of the reaction shown? I. KOH 2. CH,CH,CH,CH,Br 3. H,0 но. он…

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Q: Which among Li2S, Ba(OH)2 and FeSO4 is/are likely to be more soluble than AgCl in water? a. All…

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Q: 2. a. Provide mechanisms and/or products for the following transformation. Me Me (.5 equiv) H NET2…

A: Reaction 1 : Acid catalyzed enamine synthesis followed by Diels Alder reaction.

Q: A solution is prepared at 25 °C that is initially 0.29M in chloroacetic acid (HCH,CICO,), a weak…

A:

Q: What are the structures of the products in each step of the reaction sequence shown? H3O* РСС A B…

A:

Q: #4 - 1-Methylcyclohexene, shown in the box below, is a versatile starting material for a variety of…

A: The reactions taken are addition reaction and hydroboration oxidation.