Explain the need for an internal standard in quantitative NMR AND indicate which properties are desirable in an internal standard to be used in quantitative

Q: Be sure to answer all parts. A gas expands from 228 mL to 915 mL at a constant temperature.…

A: Given V1 = 228 ml = 0.228 lit            V2 = 915 ml = 0.915 lit (a) work done against vacuum will…

Q: On paper perform all the moln TRUE ha Con Revised summe

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: Please write full calculations and explain math At 700 K, the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g)…

A: The direction in which the reaction proceeds to reach equilibrium can be predicted by determining…

Q: How are the following structures related? A. Diastereomers B. Enantiomers C. Structural Isomers D.…

A: For the relation between given structure following steps are required -> See if these are…

Q: Using a periodic table, find the average atomic mass of each of the following elements and type it…

A: We will use the periodic table to get the average atomic masses of the element. The mass of the…

Q: [Review Topics] What mass of HC1, in grams, is required to react with 0.930 g of Al(OH)3? Al(OH)3…

A: What mass of HCI, in grams, is required to react with 0.930 g of Al(OH)3 ? Al(OH)3(s)  + 3HCl(aq)…

Q: Ascorbic acid (vitamin C, C,H,O) is a diprotic acid (K1-8.0x10-5 and Ka2 1.6x10-12). What is the pH…

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Q: Reaction of FeCl3 with ethane diol

A: When FeCl3 react with ethane diol ( means ethylene glycol ) then three moles of ethane diol react…

Q: How does an SN1 reaction mechanism form answers A and C?

A: The question is based on the concept of organic reactions. we need to explain the product formation…

Q: Hello. i need help with part a and b. 1a) Calculate [OH-] of a 1.20×10-2 M aqueous solution of…

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Q: values if needed for this question. When potassium hydroxide reacts with phosphoric acid, potassium…

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Q: In part 1 of this lab, you will be calculating ArH by conducting constant-pressure calorimetry…

A: Constant-pressure calorimetry is used to measure the change in enthalpy, ΔH, for a physical or…

Q: . Determine the moles of copper and oxygen in the copper oxide from the data 2. What is the…

A: The number of moles of a substance are given by the formula  moles = massmolar mass

Q: When Jack performed a flame test on his unknown solid, he observed a violet-colored flame. What is…

A: To solve this problem we have to know about the flame test .

Q: For the following reaction, 6.79 grams of potassiu. hydrogen sulfate are mixed with excess potassium…

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Q: Which one of the following is 4-bromo-3-methylcyclohexanone? O M₂C CH₂ Br

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Q: Use common logarithms or natural logarithms and a ca log_(14)19.

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Q: Calculate the following grams of HNO3 in 250.0 mL of 14.3 M HNO3.

A: Given, Concentration of HNO3 solution = 14.3 M = 14.3 mol/L Volume of the solution = 250.0 mL =…

Q: f. H₂N -CEN

A: The resonance structure is the structure formed by delocalization of pi electrons. More the…

Q: how can the kolrausch plot be used to determine if an electrolyte is strong or weak?

A: We know that the Kohlrausch plot is a plot of molar conductance (lamda) versus square root of…

Q: 4. s) What is the molar mass of the solute in a solution composed of 255.0 g of a non-volatile, non-…

A: Depression in boiling point ( ΔTb ) is given by,  ΔTb  = Kb × i × m   Kb  =  Boiling point constant…

Q: This figure shows the MS2 spectrum of Epigallocatechin gallate (EGCG) with fragmentation. What is…

A: In Mass spectrophotometry, organic sample is bombarded with high energy electron source , thus one…

Q: At a constant temperature T, substance A begins to transform into the products II₁, II2, and II3,…

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Q: a neutral atom will become a cation if it a. loses electrons b. gains protons c. gains electrons…

A: we know that  If a neutral atom gains an electron, it becomes negative charge ion and known as…

Q: Examine the structure of the following tripeptide and answer the questions below: Name the amino…

A: Isomeric peptides are peptides that have the same chemical formula but differ in their sequence of…

Q: What would the resonances for this be?

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Q: For the reaction below: CH,CH₂-C thay CHỊCH NH • a. Estimate the gas phase enthalpy change using…

A: Given that, a reaction is CH3CH2-Cl + H-NH2 → CH3CH2-NH2 + H-Cl. We have to calculate the gas phase…

Q: For the following reaction H₂(g) + I₂(g) ⇌ 2HI(g) ∆H° = -10.64 kJ/mol and ∆S° = 21.48 J/mol･K. A…

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Q: 5. Step 1, NO (g) + 03 (g) → NO₂ (g) + O2 (g) Step 2, 0 (g) + NO₂ (g) → NO (g) + O₂(g) If the…

A: Catalyst is a substance which is used in reaction but it is not consumed in a reaction . It will…

Q: What characteristics made PCBs so useful for industry and what were they primarily used for

A: Polychlorinated biphenyls (PCBs) are synthetic chemicals that were first synthesized in the late…

Q: Household bleach contains 6% sodium hypochlorite. How much  household bleach should be combined with…

A: Answer: In this question we have to find out the volume of 6% bleach solution that needs to be mixed…

Q: 11. Calculate the molecular formula for the compound found to have the following elemental…

A: we have to calculate the molecular formula of compound

Q: PROBLEM 16-16 The herbicide oxyfluorfen can be prepared by reaction between a phenol and an aryl…

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Q: OH MINH, HỌ Produlct, Mechanismus Typ dus Products

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Q: A 0.772 g Mixture containing only sodium chloride. and potassium chloride was dissolved in water. It…

A: Well, we will first determine the number of moles of Cl- present in the mixture. As moles of AgNO3…

Q: The temperature at which the following process reaches equilibrium at 1.0 atm is the normal boiling…

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Q: 1. Calculate the salt and acid volumes required to prepare 10 ml of the acetate buffer with the…

A: The salt is sodium acetate and the acid is acetic acid. Given that the ratio of salt and acid is 1:9

Q: if something contributes a second resonance structure, is it an electron donating group or an…

A: We have to tell if something contributes a second resonance structure, is it an electron donating…

Q: A. For each compound, show the calculation of the number of total valence electrons, the number of…

A: In a covalent compound, the atoms are bonded to each other by a sharing of electrons. In a single…

Q: Draw the major product of this reaction. Ignore inorganic byproducts. H₂O* Drawing

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Q: Give the total number of valence electrons in the following molecule. a. NF3 b. NH3 c. C6H6 d. CS2…

A: Valence electrons: Valence electrons electrons which are present in the outermost shell (energy…

Q: How many grams of solute are needed to prepare  2.81  ×  102  g of  0.900% (mass/mass)  NaCl

A: Answer: In this question mass of solution and mass% of NaCl is given to us and we have to find out…

Q: The complete combustion reaction of solid benzoic acid, CH₂COOH (s), releases 3224 kJ/mol of energy.…

A: Answer: Enthalpy of combustion of a compound is always equal to the difference between enthalpy of…

Q: Use this data to rank the following solutions in order of increasing pH. In other words, select a…

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Q: For the following reaction, 5.72 grams of magnesium nitride are mixed with excess water. The…

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Q: What is the GFM of Br₂(g)? 21.6 g/mol 159.8 g/mol 79.9 g/mol 10.8 g/mol

A: To determine GFM of Br2 (g)

Q: Zolpidem is a common hypnotic with the chemical formula C19H₂1N3O. Stilnox - the brand name of…

A: Given,The molar mass of zolpidem = 307.39 gmolThe molar mass of hemitartratre salt = 764.87…

Q: C₂H4 (g) + O2(g) → CO₂(g) + H₂O(g) [?] g 17.11g 17.11 g 15.69 g 6.42 g According to the law of…

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Q: 1. Write the condensed structural formula and molecular formula for the following molecule. a. b. C.…

A: This question belong to Nomenclature of organic compounds.  Alkane: single bond containing…

Q: How many moles are in 11.50 g of CO₂?

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Thus,

Spectroanalytical Methods

Spectroanalytical methods measure the wavelength and intensity of radiations that are either emitted or absorbed by a molecular or atomic species. These methods are useful for evaluating the electronic or atomic arrangement of the molecules of a given analyte.