(8.3)Which of the following transitions (in a hydrogen atom) represent emission of the photon with the longest wavelength? E n = ∞ n = 5 n = 4 n=3 n = 2 n=1

Q: Calculate AH for the following reaction at 25.0 °C: Fe₂O₂ (s) + CO(g) 3FeO(s) + -110.5 -272 2. AH…

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Q: which of the following compounds would more in the equilibrium ? (explain the reason) be e) HC. Cl…

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Q: 44. In the equation below; C6H5NH₂(aq) + H₂O(l) ⇒ CH₂NH₂ (aq) + OH¯(aq) Which compound is considered…

A: Conjugated acid and conjugate base:

Q: 44. What is the Pauli exclusion principle? a. No two electrons in an atom can have the same spin…

A: Pauli exclusion principle states that no two electrons in the same atom can have identical values…

Q: How much heat is required to raise the temperature of a 1.15 kg piece of copper metal from 25.0 °C…

A: Given :-  Mass of Copper metal = m = 1.15 kg = 1150 g  Initial temperature of Copper metal = Ti =…

Q: Write the formula for the following set of ions: Al3+, F1-

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Q: One molecule of lodine (1₂) and two molecules of potassium (NaCl) combine in a reaction. How many…

A: In this question, 1molecule of Iodine combined with 2molecules of NaCl and we need to determine the…

Q: A 50.0g sample of Ba(OH)2 xH₂O(s) contains 27.2g of Ba(OH)2. Calculate the value of x for this…

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

Q: 50 ppm .00 ppm 50 ppm 100

A: The solution is given below -

Q: K/U Which of the following molecules or ions can act as an acid or a base? Write the two possible…

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Q: 1. Write the product, side products and the mechanism for reaction. Write the names of starting…

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Q: 5) Predict the direction of the entropy change in each of the following reactions (i.e. write either…

A: Entropy is measure of randomness of the particle / molecule or substance.

Q: 4. Write the product and the mechanism for reaction. Write the names of starting material and…

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Q: how many ml of 0.100 m naoh is needed to dilute to a given 2.00litre of 0.0500 m naoh A 100ml B 50ml…

A: • The values provided in the q uestion are:-        i) Initial concentration of NaOH solution, M1 =…

Q: Temperature C 25 °C Write the Ksp expression here: Calculate the Ksp value here (Show work): Volume…

A: The solubility product constant is the multiplication of molarity of different constituting ions…

Q: Question 3 Predict the nature, including the correct special isomerisation (i.e. cis/trans) when…

A: These types of substitution are based on trans effect. According to which in square planar…

Q: he conjugate acid to the following bases. Not all the choices will be used. 1. H₂O 2. H₂O+ 3. H3O+…

A: Conjugate acid : Chemical compound that formed after proton is taken up by the base . Conjugate base…

Q: Ethanol vapours were allowed to completely fill a jug with a volume of 18.9L. The ethanol was burned…

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Q: 8.36 What is the major stereoisomer formed when each alkyl halide is treated with KOC(CH3)3? Br a.…

A: In chemistry, dehydrohalogenation is the process in which an elimination reaction removes a hydrogen…

Q: build a model of a galvanic or electrolytic cell. The model will be assessed according to the…

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Q: What is the concentration of the following solution? 275g of KNO3 in 1250mL of water?

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Q: Students are required to keep a neat and accurate record of their laboratory observations. Upon the…

A: In the given problem we have to speculate the the reason behind blackening of the yellow precipitate…

Q: Fill the missing in the following table : Class AB3 AB4 AB6 Number of atoms bonded to the central…

A: The molecular geometry depends on the surrounding densities around a central atom. The electron…

Q: Phosphoric acid, H3PO4(aq), can be used to remove rust. Find the molar concentration of an 85% (m/v)…

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Q: When creating an electrochemical cell, why is it important to prevent the reactants from any direct…

A: Electrochemical cell is device which convert chemical energy into electrical energy. When two…

Q: What is the oxidation state on the central carbon in the following compound? 0 HẠN CNH, 00 +1 +2 +3…

A: Given, Compound 1.H2N -CO-NH2 Compound 2. H3C-CH(CH3)-CH3

Q: The conjugate base of propan-1-ol, CH3CH2OH, is shown belo :0: *1₂ H3C-C- -CH3 H TRUE, FALSE OR IT…

A: A congugate base is the chemical species which is left over when an acid looses its proton and the…

Q: A bubble of helium gas has a volume of 0.650 mL near the bottom of a large aquarium where the…

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Q: 2. Answer parts a-e using the skeletal structure of the molecule shown below. NB # a. Add all…

A: #2:(a): We have to add H atom in accordance with the octet rule. According to the octet rule, C atom…

Q: 5. Write at least 4 different oxidation reactions for any hexose.

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Q: Determination of Ksp of CaCO3 based on the measured pH and the following equations: CaCO3 (s) Ca 2+…

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Q: Objective 9.2 (bolded objective) Use the following set of equations: a) Metallic tin reacts with a…

A: a) When metallic tin reacts with lead (II) nitrate Solution then metallic lead and a Solution of tin…

Q: What is the % potassium in 1.0 mole of K2PTC16? (K= 39.1, Pt 195.08, CI = 35.45)? a. 1.6% b. 6.1%…

A: For these type of problems you have to calculate the molar mass of that particular compound.  The…

Q: Provide the correct systematic name for the compound shown here. CH3 C/...

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Q: The Lewis Dot Structure rule states that S=N-A. Recall that S represents the TOTAL number of valence…

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Q: Jisoo was asked to prepare a 50.0ml solution containing 5.00g of CuCl₂ for the class. However, she…

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Q: A student was tasked to recover the crystals after recrystallization. He weighed a piece of filter…

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Q: Corrosion is a redox reaction that is responsible for the failure of many water mains. These are the…

A: Some of the useful methods used to improve the situation are :

Q: A 3.20 L solution of 1.25 x 10³ M Pb(NO3)2 is mixed with a 0.80-L solution of 5.0 x 10¹ M NaCl. (a)…

A: Given :  Volume of Pb(NO3)2 solution = 3.20 L  Concentration of Pb(NO3)2 solution = 1.25 x 10-3 M…

Q: Question 19 The following is an example of a(n)__________ reaction. 0 0 CH,COCH,CH, но — CH₂COH.…

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Q: What mass of magnesium is required to react with 265.0 mL  of 0.75M HCl at 26 degrees Celsius and…

A: Given,  Volume of HCl = 265.0 mL  Molarity of HCl = 0.75 M  Temperature = T = 26 0C  Pressure = P =…

Q: Fully label the unlabelled Galvanic cell below using the following information: Electrodes:…

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Q: How much energy is released when 8.1 g of water is heated from 12 °C to 18 °C? 203.3 J 203.3 kJ…

A: We have to calculate how much energy

Q: Oxidation state can be calculated by O Subtracting the associated electrons from the valence…

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Q: In which orbital below would an electron (on average) be closest from the nucleus? 3d 5p 4s 4p

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Q: t involves tive study ions show eaction cor

A: The compound mentioned will be a grignard reagent. To synthesize a grignard reagent we have to be…

Q: The following diagrams show the chemical reaction with time: A⇌BA⇌B If AA is blue and BB is…

A: The given chemical reaction with time: A⇌BA⇌B If A is blue and B is orange.

Q: Determine the molar mass of a gas that has a density of 2.18 g/L at 66°C and 720. mmHg. Enter your…

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Q: < Question 14 of 25 Submit What monomer is used to make the addition polymer shown here?

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Q: Turquoise, CuAl 6 ( P O 4 ) 4 ( OH) 8·5 H 2 O(s), is one of the most valuable non-transparent…

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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.