Ozone (O3) in the stratosphere absorbs the harmful radiation from the sun by undergoing decomposition: O3->O+O2.  (A) Calculare the delta H degrees for this process. (B) Calculate the maximum wavelength of photons in (nm) that possesses the energy to cause the decomposition of ozone photochemically.

Q: draw the skeletal (line-bond) structure of (3R, 4R)-4-bromo-3-chloroheptane

A: Organic chemistry is branch of chemistry in which we deal with organic compounds. IUPAC nomenclature…

Q: * aq. H₂SO4 OH

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Q: CaSO4 2H₂O(s) AS°f = i ! Jmol-¹ K-¹

A: 1). Standard entropy formation = 194 J/mol*K   2).Standard entropy formation =219.81J/mol*K

Q: .2 Calculate a value for the atomic radius of a chromium atom with a coordination number of 12 given…

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Q: Part 2. Predict the Organic Products. Predict the major organic product(s) for each of the following…

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Q: At 25.0° C, a 10.00 L vessel is filled with 8.18 atm of Gas A and 7.89 atm of Gas B. What is the…

A: Given that  At 25.0° C, a 10.00 L vessel is filled with 8.18 atm of Gas A and 7.89 atm of Gas B. The…

Q: What is the pressure in a 7.00 L tank with 1.24 grams of hydrogen gas at 375 K?

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Q: The value of Kp for a gas-phase reaction doubles when the temperature is increased from 300 K to 400…

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Q: A series of reactions is carried out in separate containers at a constant volume and a constant…

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Q: How many grams of sodium acetate must be added to 2.00L of 0.105M acetic acid to make a buffer that…

A: pH of buffer solution is calculated by using Henderson Hesselbalch equation

Q: HW1: What is the reaction order for the following reaction: A-- Use the graphical method by using…

A: We need to determine order of the  given reaction A→B+C using the data given. The integrated rate…

Q: for NaCl, NH4Cl, NaCH3COO, and (NH4)2CO3, identify the following: d. ion(s) expected to hydrolyze…

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Q: Select the conjugate acid-base pairs for the reaction:   CH3CO2H(aq) + H2O(l) ↔ CH3CO2-(aq)  +…

A: Conjugate acid -base pair - When an base abstract a proton from a acid it forms it's conjugate acid…

Q: 2. Predict the organic product from each of the following reduction reactions. (a) O OH OMe NaBH4 A…

A: NaBH4 ---> Reduces aldehyde and ketone to alcohol NaAlH4 ---> Reduces aldehyde, ketone, ester…

Q: place the substance with the least E1 reactive molecule at number 1 to numbber 5 1- bromobutane 2…

A: General concept of E1 reaction.

Q: the synthesized ester in each specified test tube in the experiment: Test tube A B C D Ester

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Q: Sodium Carbonate reacts with Magnesium Chloride in a double displacement precipitation reaction.…

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Q: The air at sea level is "80% oxygen and "20% nitrogen. True or False True False

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Q: In the amorphous form, Fe has an atomic radius of r=1.40 Å. Using the spherical cluster…

A: Spherical cluster approximation:- In spherical cluster approximation, a cluster is considered a…

Q: Use the indicated average bond enthalpies to estimate the change in enthalpy, ΔHo, for the reaction…

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Q: Preventing iron auto parts from corroding or rusting can be accomplished by electroplating the iron…

A: This question is based on electroplating of chromium on iron articles.And we are asked to write the…

Q: In a sealed and rigid container, a sample of gas at 4.80 atm and 60.0 °C is cooled to 20.0 °C. What…

A: Given Pressure (P1) = 4.80 atm Temperature (T1) = 60.0°C = 273.15 +60.0 k = 333.15 k Temperature (T…

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A: Elements having greater (neutron /protons) ratio has a tendency to undergoes radioactive decay…

Q: Which of the following alkyl halides will react most rapidly in an E2 reaction? CH3 H₂C I C1 CH3 II…

A: E2 reaction  ----> 1) tertiary alkyl halide give more rapid E2 than after secondary alkyl halide…

Q: calculate the Ka For CH 3 NH 3* If the Kb For CH₂NH₂ 15 4.4*10-4

A:

Q: . The hydrogen (H2) generated in the reaction is a real gas; however, you treated it like an ideal…

A: An ideal gas is defined as a gas that obeys all the gas laws over any range of temperatures and…

Q: 4. Proton NMR CH12 8 5 7 6 1 5 4 3 Chemical Shift (ppm) 2 6 1

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Q: 20 ml of an aqueous solution of an unknown substance contains 0.600 g of the substance before…

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Q: Probably meant in the calculation that 20*10K+20=0.6, but how did you get that to be 20=6K+12?

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Q: 15.0 L of an ideal gas at 298.0 K and 3.36 bar are heated to 350.0 K with a new pressure of 2.70…

A: Ideal gas are gases which have no intermolecular force of attraction. All Ideal gases obey combined…

Q: lete the table by filling in the name or chemical formula of each compound, whichever is missing.…

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Q: Ionization energy is the minimum energy required to remove an electron from an atom it is usually…

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Q: Macmillan Learning Complete and balance the precipitation reaction. Include physical states. Refer…

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Q: Choose the incorrect statement concerning radon gas. Multiple Choice Radon is a noble gas. Radon…

A: Correct answer -  Radon accounts for 3/4 of the Earth's background radioactivity.

Q: Question1) What is the pH when the solution volume in the flask reaches 95 ml? a. 12.79 b. 12.82 c.…

A: It is a simple acid-base titration in which hydrochloric acid (HCl) is titrated by sodium hydroxide…

Q: You need to make 14 mL of a 350 mM solution of a compound with FW 60.14. How many milligrams of the…

A: Concentration of a solution can be expressed in many ways. Here we are required to find the mass of…

Q: Determine AG for a reaction when AG = -161.9 kJ/mol and Q = 35 at 325 K. (R = 8.314 J/mol · K)

A: Given data :  deltaG = -161.9 KJ/mol = -161.9 ×1000 = 161900J/mol  Q = 35  R = 8.314 J/K.mol  T =…

Q: A student wishes to determine the chloride ion concentration in a water sample at 25 °C using a…

A: Given,                     AgCl s  +  e-  →  Ag s  +  Cl- aq                   E°red = 0.2223 V…

Q: Why do ketones do not usually undergo oxidation? Explain

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Q: 4,7 Describe the composition and properties of the different types of steel.

A: There are different types of steel which are listed below -->  Stainless steel Carbon steel…

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Q: Which statements below correctly explain how the entropy of surroundings of a reaction is related to…

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Q: A student wishes to determine the chloride ion concentration in a water sample at 25 °C using a…

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Q: Which nuclear equation accurately reflects the beta decay of Xe-133? Xe-133 → Cs-133 + electron…

A: Answer:- This question is answered by using the simple concept of electron decay during a nuclear…

Q: What is the scientific method answers to the freezing point of water

A: Freezing point of water is 0 oC.

Q: The depletion of ozone is particularly serious at Earth's poles because Multiple Choice polar "ice…

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Q: Determine the pH of a 0.375M solution of C5H5NHBr (pyridinium bromide). Kb table is needed to…

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Q: 3. How many molecules contained in 25.0 H₂? (FW =2)

A: H2 is a molecule which has molar mass= 2 g/mol

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.