Question 16 Spectrophotometers employ various sources of light. Which of the following is NOT true for spectrophotometer light sources? Dueterium arc lamps use controlled electric discharges to cause D2 to dissociate and emit visible radiation. Tungsten lamps emit radiation over the visible spectrum and parts of the ultraviolet and infrared spectrums. O Light emitting diodes emit narrow bands of visible and near-infrared radiation. O Lasers emit radiation of a single wavelength.

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Q: 1.) How many grams of a 75% v/v hydroalcoholic solution should be used in preparing 16 fl.oz. of a 1...

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Q: Calculate the activation energy, Ea, in kilojoules per mole for a reaction at 73.0 °C that has a rat...

A: Given,  Temperature, T = 73 °C  Rate constant, k = 0.287 s-1  Frequency factor, A = 3.14x1011 s-1 

Q: A spot of black ink was placed on a strip of filter paper. The chromatogram was developed using an a...

A: The fastest moving spot has the highest Rf value. here we see C covered a long distance so it has h...

Q: [1,0] solution pH x1 0.0027 mol/L A O mol/L B 7.03 10 mol/L 4.0 X 10 C

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Q: Name the given compounds. For uniformity's sake, name all the branched substituent as if naming an a...

A: Given, the structures of the compounds,    

Q: For the following reaction: A(aq) + B(aq) ⇌ 2 C(aq) Given the following information, what is the e...

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Q: Name the given compounds. For uniformity's sake, name all the branched substituent as if naming an a...

A: Given,

Q: Which of the following is not a step in Atomic Absorption Spectroscopy (AAS)?   A. Atoms absorb li...

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Q: Question 12 All of the following are TRUE about molecular fluorescence spectroscopy, except: O A. th...

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Q: Question 31 All of the following are assumptions in Beer-Lambert's Law, EXCEPT: O A. Path length is ...

A: According to Beer Lambert law, absorbance of a substance is directly proportional to path length and...

Q: Provide the proper IUPAC or common name for the following compound.

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Q: A molecule with both of its terminal carbons bonded to each other and contains an O or N atom within...

A: Which of the following is correct

Q: 1. Draw the structure of the following aliphatic and alicylic hydrocarbons: a. 2 – chloro butane b. ...

A: Solution is given in next step.

Q: The heat of formation at 25oC of liquid acetone, CH3C(O)CH3(l) is -247.5 kJ/mol. Which of the follow...

A: Here we are required to find the equation which would represent the heat of formation of acetone

Q: Refer to the given pair of structure, the structures are

A: In alkenes, the same priority groups are in same side Z-isomer or if the same priority groups are in...

Q: Determine the isomeric form exhibited by structure provide. ng N: S- E double bond Z double bond

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Q: The standard addition method is used to analyze a sample of a river water for mercury. Solution A is...

A: Cold vapour atomic absorption spectroscopy or CVAAS is one of the primary techniques for mercury ana...

Q: Question 3 Which of the following statements are true of atomic emission spectroscopy (AES)? I. Atom...

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Q: What is could be the calculated lambda max of this compound?

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Q: The reaction of 5.0 g of CuSO 4 with excess sodium hydroxide produced 2.6 g of Cu(OH) 2. What percen...

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Q: The reaction of sucrose with water in an acidic solution is C12H22011 + H2O C6H1206 + + C6H1206 sucr...

A: Given, rate constant (k) - 6.17 × 10-4 s-1. Initial reactant concentration([Ao]) - 0.40 M. time take...

Q: O A 466-g sample of water is heated from 8.50 °C to 74.60 °C. Calculate the amount of heat absorbed ...

A: NOTE: Since you have asked multiple questions, we will solve the first question for you. If you want...

Q: Question 10 Which of the following monochromator terms is NOT correctly defined? refraction: scatter...

A:                           Answer  Which of the following monochromator terms is not correctly define...

Q: Determine the isomeric form exhibited by structure provide. ОСНЗ HO,, CH2SH R configuration B) S con...

A: For determination of configuration first of all we give numbering to the substituents attached to ch...

Q: 1. Consider the reaction at 25 degrees Celsius 2NO3 iaa) + 8H ian) + 3Cu(s) → 3CU2"(aa) + 2NO(g) + 4...

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Q: 3. Hess's Law. Identify if the reaction is endothermic or exothermic. Chlorine trifluoride is a colo...

A: We have to rearrange the equation to get desired net equation 

Q: What is the IUPAC name for the organic compound shown below?      a 1,6-dimethylcyclohexene   b ...

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Q: Balance the following equation with the smallest whole number coefficients. What is the coefficient ...

A: Reaction is :-  LiBF4 + H2O ------> H3BO3 + LiF + HF

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Q: Name the given compounds. For uniformity's sake, name all the branched substituent as if naming an a...

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Q: where did the 14 come from?

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Q: For the reaction 2NOCI→ 2NO + Cl, the rate constant k equals 0.020 L mol 1 s1 at a certain temperatu...

A: Given,  rate constant, k  = 0.020 L mol-1 s-1   L mol-1 s-1 is the unit of second order reaction.   ...

Q: で三C-C=c一

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Q: A mixture of CO2 and Kr weighs 37.6 g and exerts a pressure of 0.855 atm in its container. Since Kr ...

A:

Q: 2 eq CH3CH20H H30* KMnOд, cold -CH2-CH2-C- H- dilute KMNO4, hot -CH2-CH2- H- H*

A: Major product  are obtained by applying appropriate  reaction mechanism as show in below steps. 

Q: The following reaction is performed using 8.75 g of Fe2O3 and 4.75 g of Al.   Fe2O3 (s)  + 2 Al (s)...

A: Given, Fe2O3 (s)  + 2 Al (s)  ➝   Al2O3 (s)  2 Fe (s) Mass of Fe2O3 reacts = 8.75 g Mass of Al react...

Q: Which of the following will cause an instrumental deviation in Beers Law? I. stray light II. uncle...

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Q: 3-methylhexane is A Linear saturated hydrocarbon B Branched saturated hydrocarbon Linear unsaturated...

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Q: All of the following are classified as an instrumental method of analysis EXCEPT: O A. electroanalyt...

A: Answer: Different methods are used In chemical analysis and they can be classified into two categori...

Q: 1.CH,Mgfe, THE 2.H F D.

A: Grignard reagent is the source of nucleophilic which undergoes nucleophilic addition reaction. 

Q: II D The correct arrangement of figure I is: light source – monochromator – sample – photomultiplier...

A: Answer :-  light source  -->  monochromator  --> sample  -->  photomultiplier tube  -------...

Q: In a bromine-producing plant, how many liters of gaseous elemental bromine at 253°C and 0.868 atm ar...

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Q: Calculate the molecular weight of the solute in a solution containing 2.47 g of a non-volatile solut...

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Q: Elemental phosphorus is produced from calcium phosphate in the following reaction. What is the coeff...

A: We have to predict the coefficient of carbon.  

Q: Answer the following. Explain and Show your solutions. 1. The alpha decay of what isotope of what el...

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Q: Determine the formula weight of Ca 3(PO 4) 2- O a. 135 amu O b.310 amu O c. 215 amu O d. 279 amu O e...

A: The compound given is Ca3(PO4)2.  

Q: Calculate the amount of heat produced when 6.753 L of liquid glycerol (C3H8O3) is burned in excess o...

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Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.