I have to answer the following questions relating to the attached HNMR spectrum. a. Match the hydrogens in dibenzalacetone to the signals in the spectrum. b. Does this sample also contain any benzaldehyde? c. Does this sample also contain any other impurities?

Q: A student performed a reaction using 2-methoxyethanol as solvent under acid catalyst. When the solve...

A: Given that, a student performed a reaction using 2-methoxyethanol as solvent under acid catalyst. Wh...

Q: 14.8 M NH3 solution is needed to prepare a solution containing 200.0 mL of 3.4 M NH3. How many mL of...

A: V1 =? M1 = 14.8 M V2 = 200 mL M2 = 3.4 M

Q: A sample of oxygen gas has a volume of 545 mL at 35°C. The gas is heated to 151°C at constant pressu...

A:

Q: C,H, + 50, - 4H,O + How many moles of C,H, are in 5.3 x 102 moles of CO,?

A: given :- C3H8 + 5O2 → 4H2O + 3CO2  number of moles of CO2 = 5.3 × 1012 mol  To calculate :- number o...

Q: how would you calculaet molar concentration of an acid?

A: Molar concentration  

Q: 5.0 g of solid silver iodide (Agl) is added to a 100.0 mL solution at room temperature and given suf...

A:                                                   AgI (s)  ⇔  Ag+  +   I-                           ...

Q: When 2,2-dimethyl-1-propanol is heated with acid, it is slowly converted into an 85:15 mixture of 2 ...

A: Organic reaction mechanisms:

Q: Ammonium nitrate fertilizer is sometimes used as an explosive. a) How many moles of water can be for...

A: number of moles = mass/molar mass  mass = moles × molar mass 

Q: Determine the [OH ], [H3O*], pH and pOH in a 1.0 x 103 M Ba(OH)2 solution.

A:

Q: Use the chemical equation and the table to answer the question. Pb(NO3)2(aq) + 2KBr(aq) → PbBr2(s) ...

A:

Q: Given: H2(g) + 1/2 O2 (g) —> H2O (l) Delta H = -285.8 kJ   Combine this equation with equation 1 a...

A: For combustion reaction , we need The compound ( or element ) and Oxygen as reactants, because combu...

Q: PHOTOSYNTHETIC PIGMENTS 1.6 0.7 1.4 0.6 1.2E Soret 0.5 HA 0.4 0.8 COOCH 0.3 0.6 phytyl bacteriochlor...

A: Higher the wavelength shorter will be the energy gap between the two energy levels  

Q: What is the net ionic equation of CoCl2 + 2HCl → CoCl4 + H2

A: The net ionic equation for the above equation is given below

Q: 100-g of MgSO4•7H2O is dissolved in 900 g of water. If the density of the solution is 1.047 g/mL, wh...

A: Given data,Mass of MgSO4.7H2O=100gMass of water=900gDensity of solution=1.047g/mL

Q: Part A MISSED THIS? Read Section 15.5 (Pages 650 - 656), 15.7 (Pages 661 - 666) .Suppose that a cata...

A: Given data : 

Q: • Part A The graphs labeled (i) and (ii) show the titration curves for two equal- volume samples of ...

A: A.) pH at equivalance point can be determined from graph .   B.)  We can determine nature of acid fr...

Q: FORMULA QUESTION In one standardization trial, 0.069 g of potassium hydrogen phthalate were neutrali...

A:

Q: Consider a voltaic cell with 2 electrodes (one of them is an Aluminum electrode, and the other is Si...

A:

Q: e the pH of the solution. Be s

A:

Q: Which of the following pairs of reactants and reactions is INCORRECT? a. Lucas reagent : Nucleophi...

A: Which of the following pairs of reactants and reactions is INCORRECT?

Q: (CH),) is shown below. Highlight each atom that is in a methyl group. The chemical structure of dime...

A:

Q: The a-decay of 238U (t,/2 = 4.47x10°y) leads to 234TH (t/2 = 24.1d). A sample of uranium ore should ...

A: Given, α decay of U238 to T234h. The isotopic abundance of U238 (natural) = 99.3 %

Q: Determine the enthalpy of reaction for P4O10(s) + 6PCI5(g) → 10POCI:(g) P4(s) + 6CI2(g) → 4PCI3(g) A...

A: P4 (s) + 6Cl2 (g) ------> 4PCl3(g) ΔH = -1225.6 KJP4 (s) + 5O2 (g) --------> P4O10 (s) ΔH = - ...

Q: You synthesize the following compound via a base-mediated synthesis. Upon workup, you find that the ...

A: The solution of the answer is given below:

Q: What is the Kb for the conjugate base of an unknown acid with a Ka of (7.1x10^-3)

A:

Q: cat. H2SO, H20 HO, (2)

A:

Q: A certain amount of the Butylated hydroxvanisole (BHA) was dissolved in 21.0 g of trichloromethane (...

A:

Q: 8. Consider the following chemical reaction: 4 HBr(g) + O2(g) → 2 H20(g) + 2 Br2(g) Identify the sub...

A:

Q: An electrochemical cell is based on these two half-reactions and their given standard reduction pote...

A: To calculate cell potential , we would use nernest equation.  For this we would require standard cel...

Q: Part A Gibbs energy change, A, G°, is related to cell potential, Eu, by the equation A.G° = -nFE Cal...

A:

Q: QUESTION 1 During an experiment, a student mixed 14.5 mL of a 0.500 M sodium fluoride solution with ...

A:

Q: You have a large bottle of 10.0 M HCl and you want to make 400 mL of 1.25 M acid. How much concentra...

A: Given that, M1=10.0 M, V1= ? M2=1.25 M, V2=400 ml  

Q: is 64 kg bigger than 64000 g

A: To compare the given two masses, first of all, we change the unit of one mass to get the same unit o...

Q: Given: Solubility product for a series of hydroxides: BiOOH Ksp = 4.0 x 10^-10 = [BiO+][OH-] Be(OH)2...

A:

Q: Given the following information: 2 A(g) + B(g) ⇌ A2B(g) K1 = 5.0 x 10^4 2 A(g) + C2(g) ⇌ 2 AC(g) K2 ...

A: Kc is the ratio of the equilibrium concentrations of product over equilibrium concentrations of reac...

Q: Zinc dissolves in hydrochloric acid to yield hydrogen gas: Zn(s) + 2HCI(aq) → ZnCl2(aq) + H2(g) What...

A: Using stoichiometric ratio we can determine how many moles of each reactant reacts . From that we ca...

Q: What is the rate of reaction in terms of C in the following reaction: A + B 2 C. O a. +A[C]/2At O b....

A: Reaction  A + B ——————> 2C  

Q: How many grams of ethylene (C2H4) would have to be burned to produce 450 kJ of heat? C2H4(g) + 302(g...

A: Given :-  C2H4(g) + 3O2(g) →2CO2(g) + H2O(l)  ∆H°rxn = -1411 kJ/mol  To calculate :- amount of C2H4 ...

Q: Lewis structure

A:

Q: What mass of solid magnesium phosphate is formed when 250mL of 0.225 M magnesium hydroxide are mixed...

A: when 250mL of 0.225 M magnesium hydroxide are mixed with 150 mL of 0.150M phosphoric acid. To find :...

Q: Answer the questions below based on the spectra Write a mechanism for the formation of semicarbazon...

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

Q: order of the reaction, determine the rate constant, k, with units, and write the complete rate law. ...

A: We have to solve above question and find order and rate law with value of rate constant.

Q: Consider the following reaction carried out a 1000 K: A (g) B (g) + C2 (g) Kp = 0.1000 a. At 1000 K ...

A: a.) To calculate the partial pressure , we would draw an ICE table and use given Kp value and Initia...

Q: Determine the product of the following reaction! 1. C2H3MgBr 2. H2O/H*

A:

Q: some articifical sweeteners are isomers of natural sugars.  Being isomers, the digestive enzymes do ...

A: Null Hypothesis (Ho)- The artificial sweeteners will not significantly alter cell respiration in yea...

Q: How to balance Ca+As in a chemical equation predict the probability of the reaction Predict the prod...

A: A compound is formed by the electrostatic interaction between the cation and the anion. The cation i...

Q: ging and Winat Changing Constant No Answers Chosen No Answers Chosen Possible answers I temperature ...

A: ∆G is dependent on various factors like:

Q: GeF3H is formed from GeH4 and GeF4 in the combination reaction:   GeH4 + 3 GeF4 → 4 GeF3H If the ...

A: The balance chemical reaction :  GeH4 + 3GeF4  ---> 4GeF3H  Reaction yield = 92.6 %  Number of mo...

Q: m Calculate the kinetic energy of a 3.2 x 10" kg airplane moving at a speed of 187. S Round your ans...

A:

Q: A tank contains 13.0 L of oxygen gas at 25°C and 35.0 atm. Helium gas is added until the mole fracti...

A:

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.