nmr

Q: What is the correct mechanism number

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Q: A 4.81 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee cu...

A: Mass of unknown salt = 4.81 g Molar mass of unknown salt = 116.82 g / mol Moles of unknown salt take...

Q: Consider the following diagram of free energy (G) versus fraction of A reacted in terms of moles for...

A: The change in Gibbs free energy determines the spontaneity of the reaction. If its value is negative...

Q: 1.0 L of a buffer is prepared. It contains 0.125 M HA (pK. = 4.74) and 0.115 M A¯. What is the pH of...

A: In buffer if strong acid is added then concentration of salt decreases and concentration of acid inc...

Q: What products would form from a reaction between Potassium tert-butoxide in THF and the following co...

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Q: What is the correct witig product?

A: Stabilized ylide gives trans product while unstabilized ylide gives cis product.

Q: Determine the molar solubility for Cr(OH)₃ (Ksp = 6.3 × 10⁻³¹) in an aqueous solution that has a pH ...

A: Solubility equilibrium is a type of dynamic equilibrium that exists when a chemical compound in the ...

Q: Predict products, writing correct formula for each reactant and product, then provide coefficients t...

A: 1. sodium carbonate+ hydrochloric acid = ? The complete balanced equation is : Na2CO3(aq.)  +  HCl(a...

Q: Calculate the molar solubility of Barium fluoride, BaF2 (Ksp = 1.0×10–6)molar solubility = ___ mol/L...

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Q: ick Prep Use the References to access important values if needed for this question. -gas is compress...

A: According to the first law of thermodynamics, energy is neither created nor destroyed. Hence the int...

Q: Use the References to access important values if needed for this question. 3Zn2+ + 2Cr*+ 7H20→3Zn+ C...

A: The given reaction is written below : 3Zn2+  +  2Cr3+  +  7H2O  →  3Zn  +  Cr2O72-  +  14H+ When oxi...

Q: Use the Debye-Hückel equation to calculate the activity coefficient of each ion at the given ionic s...

A: Given: Ionic strength of Zn2+ = 0.0552 M Ion size,α of Zn2+ = 0.600 nm Ionic strength of Ce4+ = 0.03...

Q: Consider the reaction 4NO2(g)+ O2(g)→ 2N2O5(g)At a particular time during the reaction, nitrogen dio...

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Q: How is adding twice the amount of vinegar (the analyte in a titration) going to affect the amount of...

A: 1) when we add twice the amount of vinegar , the amount of NaOH will also become double . From M1V1=...

Q: Write the number of valence electrons in the elements Ca,Si,Kr,S and Na

A: The given elements are, Ca Si K S Na

Q: Example Problem #9-8c: 0.400 L of a 12.0 M stock solution of sulfuric acid is enough to prepare how ...

A: Dilution of the solution: On dilution of the solution with the pure water, the mole of solute remain...

Q: Level = 6ft of water (h20 density = 0.036 Ib/in^3) Find gauge reading in psi = Find gauge reading ps...

A: As it is known that- 2.31 feet of water head will be equal to 1 Pound per square inch (psi) psig: Wh...

Q: According to the VSEPR theory, the geometry of the SO3 molecule isa. pyramidal b. tetrahedral c. tri...

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Q: Use the Solver function in Excel to determine [Sr²+], [F¯], [HF], [OH-], and [H*] for a saturated so...

A: Introduction: Solubility product: Solubility product constant measure the extent to which a solute i...

Q: Write the electron configuration for atoms of chlorine Cl in their ground state and use it to predic...

A: Electronic Configuration is a way of representing electrons in the subshells as per the energy of th...

Q: To a separatory funnel with two layers—the nonpolar diethyl ether and the polar water—is added a sma...

A: (i)

Q: Calculate the ionic strength of a solution that is 0.0547M in Al2(SO4)3.

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Q: 3. Choose all the correct names.  There may be more than one.

A: Ans

Q: 40 K undergoes beta decay.. what is the product formed?

A: Solution :      In Beta-decay neutron break down and form an electron(β-particle) and becomes a prot...

Q: 5.0 mL of a stock solution of 12.5 M phosphoric acid is diluted to 5.00 liters. What is the concentr...

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Q: Given the following equation: 2 Fe2O3  + C → Fe +  3 CO2  How many moles of Fe is formed when 5.63 x...

A: By mol concept1 mol=6.022×1023atoms                 or6.022×1023atoms=1mol5.63×1024atoms=56.3×10236....

Q: analyte concentration(C)(mg/ml) injection volume (ul) elution time (time) peak DAD signal(mAU) caf...

A: concentration of mixture= C1V1+C2V2+C3V3+C4V4/(V1+V2+V3+V4)

Q: How many moles of water at 100°C will evaporate to water vapour at 100°C if 13.4 MJ of energy is abs...

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Q: The equation for the complete combustion of butane gas (C4H10) is:  2C4H10+13O2    8CO2 + 10H2O Meas...

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Q: 1. 2-Chloro-2-methylpropene reacts with water in three steps to yield 2-methyl-2-propanol.  The firs...

A: We have given the comparative reaction rate . We need to determine the energy diagram for the given ...

Q: [Tutorial: Empirical formula] This question will walk you through the process of calculating the emp...

A: Given: The number of moles of carbon, nitrogen, and hydrogen present in 100 g of sample is 2.38 mol,...

Q: How many moles of HNO₃ will be produced from the reaction of 45.0 g of NO₂ with excess water in the ...

A: The given data contains, mass of NO2= 45.00 g.Molar mass of NO2=46.0 g/mol.  

Q: B. Using the graph shown below, determine the pKa for this weak acid. Answer: pKa = Experiment 6: Ti...

A: The graphical representation of pH of the solution during the titration is known as titration curve.

Q: 13. Which of the following cations rearranges to form the more stable ions shown.  Pick all correct ...

A: Carbocation rearrangements are common in organic chemistry and are defined as the movement of a carb...

Q: Predict the major product of the following transformationand draw a mechanism.

A: There are many mechanisms in organic chemistry such as nucleophilic substitution, nucleophilic addit...

Q: Write chemical formulas for all reactants and products then provide coefficients to balance the chem...

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both...

Q: How many moles of NaOH need to be added to 200.0 mL of a 0.200 M solution of HF to make a buffer wit...

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Q: Identify the following type of chemical reaction for all 4 reactions  1.AlCl3 + F2 --> AlF3 + Cl2...

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Q: 1. No two molecules can have the same exact mass True False 2. The exact mass of butanol is 74.0732 ...

A: 1 true 2 true 3 true 4 true 5 false

Q: What will be the three products?

A: i. The product formed when 2-methylbromobutane reacts with OCH3 group is,

Q: Enter your answer in the provided box. Ammonia (NH3) decomposes to hydrogen and nitrogen and 22.0 kc...

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Q: If 15.00 mL of 3.00 M potassium iodide is needed to reach the equivalence point with 10.00 mL of lea...

A: The reaction taking place is, PbNO32 +2 KI → PbI2+ 2 KNO3 Number of moles of KI is determined as fol...

Q: 1. A 15ml portion of HCl soln is reacted with 25ml of 0.01M AKOH)3 soln. to reach the end point. Cal...

A: The number of moles is a ratio of the mass of a substance to the molar mass of the substance. Molari...

Q: When cobalt carbonate is dissolved in solution, the following equilibrium reactions are important (p...

A: Solubility product is a product of the concentration of ions with the power when the solution is sat...

Q: Describe the structure and coordination of the magnesium atom inGrignard reagent C2H5MgBr (indicate ...

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Q: For the following set of pressure/volume data, calculate the missing quantity. Assume that the tempe...

A: Boyle's law :-  According to this law , at constant temperature volume of a fixed mass of gas is inv...

Q: Calculate the freezing point of a solution containing 109 gg FeCl3FeCl3 in 171 gg water.

A: Given: weight of solute (FeCl3),  w =109g we know thta, Molecular weight of solute (FeCl3), W=162.2g...

Q: When limestone (solid CaCO,) is heated, it decomposes into lime (solid CaO) and carbon dioxide gas. ...

A: Mass of CaCO3 = 13.1 kg      since 1 kg = 1000 gMass of CaCO3 = 13.1 kg ×1000 g1 kgMass of CaCO3 = 1...

Q: Which subshells (?, ?, ?, ?, or ?)(s, p, d, f, or g) can have electrons with the indicated magnetic ...

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Q: 2Crt + 3Pb2++ 7H,0 Cr,0,2 +3Pb+ 14H In the above redox reaction, use oxidation numbers to identify t...

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NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.