Which of the following is one of the resonance contributors of the intermediate produced in a Friedel-Crafts alkylation of benzene? R R H- R -H- R H. H. I I I

Q: The depletion of ozone (O3) in the stratosphere has been a matter of great concern among scientists ...

A: 1 mol of NO (g) reacts with 1 mol of O3 (g) to form 1 mole of NO2 (g) and O2 (g).

Q: . The dissociation of N;O4 into NO2 is 16.7% complete at 298 K and 1.013 bar. N2O«(g) =2 NO2(g) Dete...

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Q: 1. At 603 K, there are 0.0100 mol of NH,Cl, 0.0100 mol of NH3, and 5.8 x 10³ mol of HCl in a closed ...

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Q: Calculate the amount of energy (in kJ) required to heat 100. g of water from 20.0 ºC to 35.0 ºC? (Th...

A: Thermodynamics is branch of chemistry which deals with heat gained or heat lost by the system. 

Q: 1. Br2, FeBr3 2. AICI3, .CI Br b.

A:

Q: Using your knowledge of molecular structure, identify the main intermolecular force in the following...

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Q: (CH3)2CO; MW 58.08 g/mol] is 56.1°C, and its molar enthalpy of vaporization is 29.1 kJ/mol. What is...

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Q: Can you answer the question?

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Q: : A precipitate of PbI, is formed when 5 mL of 0.012 M Pb(NO,), is added to 5 mL of 0.030 M KI. it w...

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Q: 7. Each of the following synthesis will not produce the desired product. Explain the flaw in each sy...

A:

Q: need

A: Part A: The harmonic oscillator eigenfunction, is an odd function if n is even. The statement is TRU...

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A: Given,   mass of H2O = 421 g  volume = 42.5 L temperature = 30.50 C.

Q: 6) Which of the following is not part of the kinetic-molecular theory? A) Atoms are neither created ...

A: For question 6, we have to find the statement that is not part of the kinetic molecular theory. For ...

Q: Consider the reaction described by the equation C,H, Br, (aq) + 31¯ (aq) –→ C,H,(g) + 2 Br¯(aq) + I,...

A: The rate of the reaction is directly proportional to the concentration of the reactants. So rate con...

Q: Understanding the high-temperature formation and breakdown of the nitrogen oxides is essential for c...

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Q: e structure c

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Q: 2. How many sigma bonds and pi bonds are in this molecule of ethyne? H-C=C-C

A: The ethylene molecule contain 3 sigma-bonds and 2 pi-bonds.

Q: Calculate the molarity of a solution containing 5.3 gm of Sodium carbonate in 250 ml.

A: Given :-  mass of sodium carbonate = 5.3 g  volume of solution = 250 mL  To be calculated :-  molari...

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A: Given : We have to tell why this compound shows no color in ether but in the presence of base it sho...

Q: -NH -OEt H2N 1. EtO Na* 2 CH,CH2OH 2. H,0 - NH -OEt H,N Barbiturates are prepared by treating a deri...

A: Solution:

Q: Calculate the molar concentration of nitric acid (63.0 g/mol) in a solution that has a specific grav...

A: The relation between molarity (molar concentration), percentage, density and molecular weight is giv...

Q: Give the mechanism of the following reactions. Briefly explain why any selectivities occur. 1 eq HBr

A: Ring opening reaction.

Q: Assuming that the sample optical path length is 1 cm, find the molar absorptivity at wavelength 1 fo...

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Q: Construct the matrices for all symmetry elements in the point group C2h. Choose any pair of these sy...

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Q: a vessel contains N,O, at a concentration of 1.36M. Calculate the concentration of N,O r is importan...

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Q: Consider the reaction F2(g) + 2CIO2(g) → 2FCIO2(g) Use the data in the table to calculate the rate o...

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Q: Balanced nuclear reaction

A: Balanced nuclear reaction means number of proton in both side is equal and also mass number in both ...

Q: e rate constant of

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Q: Problem 1. How many sigma and pi bonds are present in this molecule of propylene? H H. H H

A: The molecule contain 8 sigma-bonds and 2 pi-bond.

Q: H3C CH2

A:

Q: H2

A:

Q: A proposed mechanism for the gas phase reaction of chloroform (CHCl3) and chlorine is as follows: 1....

A: The relation between the concentration of the reactants and the rate of reaction is expressed by the...

Q: er soluble ions produced by the addition of Na2O2 and ex

A: The chemical reaction between Na2O2 and excess KOH is given below: Na2O2 + 2KOH → 2NaOH + 2KO.

Q: 9) Of the following, which gives the correct order for atomic radius for Mg, Na, P, Si and Ar? A) Si...

A: 9. Electronic configuration : Na: 1s22s22p63s1 Mg:1s22s22p63s2 P: 1s22s22p63s23P3 Si :1s22s22p63s23P...

Q: The vapor-liquid reactive equilibria for ethyl lactate synthesis follows the expression log K = 7.89...

A: The vapour-liquid reactive equilibria equation given is, => log(K) = 7.893 - 2.4312 × 103T And te...

Q: A certain liquid has a vapor pressure of 92.0 Torr at 23.0 C and 315.0 Torr at 45.0 "C. Calculate th...

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Q: The following names are incorrect. write the correct IUPAC name of the compound that agrees with the...

A: The correct names of the compounds and structures are given below

Q: Fuel used in nuclear fission is U-235. In the process, neutron particle is used to split U-235 into ...

A: We to write the nuclear reaction for nuclear fission is U-235 which undergo by neutron particle whic...

Q: grams

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Q: QUESTION 6 If two wavefunctions, w(x) and p(x), are orthogonal, this means that they have the follow...

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Q: Write the equilibrium constant expression, Kc, for the following reaction: If either the numerator o...

A: given,       MgCO3 (S) ⇔ Mg2+(aq) + CO32-aq) the equilibrium constant Kc expression is:

Q: general chemistry , please solve question 2

A: Nitrogen can form various oxoacids.  The given acids names and structures are written below

Q: 01- Ordene a maior e a menor frequência de vibracional na região do Infravermelho (IV) dos seguintes...

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Q: CH2CONH2 , OH H3CH2C/,. ÇOONH2 HSH2C,, CIOC,,, HO CH2OCH3 CH2OH -COOCH3 A H3CO H3CO

A: Since you have posted questions with multiple subparts as per guidelines we can answer only three pe...

Q: 10. Nitrogen oxides undergo many interesting reactions in the environment and in industry. Given the...

A: The ΔH for overall chemical equation can be determined by adding ΔH of two of the chemical reactions...

Q: The equilibrium constant, Kp, for the following reaction is 0.215 at 673 K. Calculate K, for this re...

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Q: Determine ∆S for the phase change of 2.35 moles of naphthalene from solid to liquid at 80.3°C. (∆H =...

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Q: Group prioritization is based on the electronegativity of the atoms directly attached to the carbons...

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Q: ny moles of N

A:

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.