Which of the following regions of the electromagnetic spectrum has the lowest energy

Q: O Other Boc (EOC) [References] Consider 45.0 mL of a solution of weak acid HA (K water must be added...

A: Here 45 ml of weak acid HA (ka= 1.4×10^--6) has pH 4.25 is diluted and the pH becomes 5.25 . We have...

Q: Benzophenone 'H-NMR and Enlarged Benzophenone 'H-NMR 4H 4H 2H 8

A:

Q: A sample of methane gas at a pressure of 1.09 atm and a temperature of 262 °C, occupies a volume of ...

A: The temperature of a gas can be calculated by the ideal gas equation: PV=nRT, where P is the pressur...

Q: Aspirin (C9H8O4) is synthesized by reacting salicyclic acid (C7H6O3) with acetic anhydride (C4H6O3)....

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Q: Draw a structural formula for the more stable carbocation intermediate formed in the reaction shown....

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Q: und 1nt orbitals

A: This is a multiparts question.According to guidelines in multiparts question we can solve only four ...

Q: The temperature of a sample of copper increased by 24.7 °C when 275 J of heat was applied. Substance...

A: Specific heat is defined as amount of heat required to raise the temperature of one gram of a substa...

Q: Draw the products of the reaction shown. Electron flow is indicated with curved arrows.

A: The chemical reaction given is 

Q: Solid NH, HS decomposes by the following endothermic process: NH, HS(0) * NH, (9) + H2S(9) a. What e...

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Q: When 6.65 g of the hydrate NiSO4 • xH2O was heated in a vacuum, the water was driven off and 3.67 g ...

A: NiSO4 . xH2O is a hydrated form of nickel Sulphate and the water involved is called water of crystal...

Q: MgCl2 + Fe(NO3)3 Balanced equation: Net ionic:

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

Q: Draw the structure of the most stable intermediate that forms from the following reaction. to Br Met...

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Q: The pH of a 0.50 M solution of the weak base ethyl amine, C2H5NH2, is 12.20. a. Write the dissociati...

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Q: Be sure to answer all parts. For reactions in condensed phases (liquids and solids), the difference ...

A: Given, Pressure = P = 4.00×104 atm density of graphite =2.25 gcm3 density of diamond =3.52 gcm3

Q: Enough of a monoprotic acid is dissolved in water to produce a 1.21 M solution. The pH of the result...

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Q: (iii) Write the equilibrium constant for the following chemical reaction +2 Mn -0+ H,0 MnO, +2H* 2

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Q: Consider the reaction: NOC) = NO) + Cl2 (@) a.) At equilibrium, the number of moles for each chemica...

A: given the equilibrium reaction 2NOCl⇋ 2NO+Cl2 Here we are required to find the value of the equilibr...

Q: Which direction would the equilibrium shift if heat is added to the reaction? Co2 cobalt(ii) sulfate...

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Q: Acetylene (C,H,) gas and oxygen (0,) gas react to form carbon dioxide (CO,) gas and water (H,O) vapo...

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Q: Problem 8 C8H14 18- 40 20 4000 3500 3000 25b0 20be 1500 1000 3H 2H 2H 2841.51- 484.16 - 1278.97 1072...

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Q: A deepwell water sample of 100 mL was titrated with 0.010 M EDTA at pH 10 ( with Mg-EDTA pH 10 buffe...

A: Solution                         Given that Deepwell water sample = 100 ml Titrated with = 0.010 M ...

Q: A student reads a barometer in the laboratory and finds the prevailing atmospheric pressure to be 74...

A: (i) 747 mmhg to atm 760 mmhg = 1 atm 1 mmhg = (1/760) atm 747 mmhg = (747/760)atm = 0.983 atm (ii) 7...

Q: Calculate the pH if 68mL of 0.150M ethylamine (pKb=3.252) is added to 68 mL of 0.128 M KOH. Assume t...

A: Ethylamine is a weak base with pKb of 3.252. KOH is strong base. There is no reaction between strong...

Q: A balloon filled with helium has a volume of 1.28 × 10³ L at sea level where the pressure is 0.998 a...

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Q: In an experiment designed to produce calcium oxide by the chemical reaction: 2Ca + 02 2Cao 103.0 g o...

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Q: Arange the following structures according to INCREASING ACIDITY (1-5). Prompts Submitted Answers Cho...

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Q: Valence e's: NO, Bonded Atoms: Lone Pairs: Steric Number: Shape: Polarity:

A: The given ion is NO2-

Q: For many weak acid or weak base calculations, you can use a simplifying assumption to avoid solving ...

A:

Q: 3. а. For what type of reaction does Kp equal to Kc? Explain. b. Calculate Ko forthe following equil...

A: Kp and Kc is equilibrium constant

Q: Give the organic product: „CO,H Heat B C D COH Select one: A

A: Here, in this case, 4n+2πe- system, so here Diels-Alder reaction takes place. Now, in this case, due...

Q: A student was given a stock ascorbic acid solution of 2.323 mg/L. Following the directions in the la...

A: Concentration of stock ascorbic acid solution = 2.323 mg/L

Q: A solid substance A is soluble in water to the extent of 10 mg/mL of water at 25 °C and 100 mg/mL of...

A: A solid substance A is soluble in water to the extent of 10 mg/mL of water at 25 °C and 100 mg/mL of...

Q: 5g of sugar at 10g of water. What is the volume?

A: Given :-  mass of sugar = 5 g  mass of water = 10 g  To calculate :-  total volume of solution 

Q: The pH of a 0.10 M solution of formic acid, HCHO2, is 2.38. a. Write the acid dissociation reaction ...

A: Given,  The pH of a 0.10 M solution of formic acid, HCHO2, is 2.38. The acid dissociation reaction f...

Q: 5.41 Draw the structures of the aldehydes that might be oxi- dized to yield the following carboxylic...

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Q: What is the molarity of 89.633 grams of NaOH dissolved in 1209.879 milliliters of solution?

A:

Q: According to the activity series, which of these metals will react with most acids to produce H, gas...

A: Activity series : K>Na> Ca> Mg>Al>Zn>Fe>Sn>Pb>H>Cu>Ag>Au  

Q: An automobile tire is inflated to a pressure of 31.6 psi. Express this pressure in atmospheres, kilo...

A: Given :- pressure = 31.6 psi  To convert :- 31.6 psi to atm, kPa, in Hg,   mm Hg and torr

Q: A 100 mg vitamin C tablet weighed 1.681 g. A student crushed the tablet and transferred 0.150 g of t...

A: Given the weight of 100 mg Vitamic C (ascorbic acid) tablet = 1.681 g  0.150 g of the above tablet i...

Q: Calculate the molar solubility of magnesium fluoride (MgF2) in a solution that is 0.250 M in NaF. Fo...

A: The solubility constant of a compound is the multiplication of the molar solubility of its constitue...

Q: The isomerization of cyclopropane, C3H6, is believed to occur by the mechanism shown in the equation...

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Q: 0.02 M NaOH reagent was standardized using 0.1000 g Potassium hydrogen phthalate (204.22 g/mol) and ...

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Q: The pH of an aqueous solution of 0.377 M hydrocyanic acid is

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Q: Aqueous solutions of aluminum sulfate and barium nitrate react to yield a white precipitate of bariu...

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Q: If an additional 0.154 mol of gas is added to the balloon (at the same temperature and pressure), wh...

A: Given n1 = 0.149 mol V1 = 2.66 L  

Q: The least reactive carboxylic acid derivative is carboxylate itself. In biological systems, the carb...

A: The acyl phosphate ester acts as a highly reactive acyl derivative like acyl chloride and its reacti...

Q: A chemistry graduate student is given 500. mL of a 1.80M hydrocyanic acid (HCN) solution. Hydrocyani...

A: First to calculate the moles Then using formula to calculate mass of KCN.   

Q: The reaction shown takes place via radical-initiated halogenation, wherein an initiation step (not s...

A: The given reaction is followed by free radical mechanism (bromination) of alkane.

Q: 20.0 grams of Sodium hydroxide was dissolved in water up to 500 mL. Calculate the Molar concentratio...

A: Definition: Molarity is a concentration term for a solution. The molarity of a given solution is def...

Q: A deepwell water sample of 100 mL was titrated with 0.010 M EDTA at pH 10 ( with Mg-EDTA pH 10 buffe...

A:

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.