Define the following 1.Aufbau Principle 2. Hund's Rule 3. Electron Configuration 4.Ground State 5. Excited State 6. Orbital Diagram 7.Pauli's Exclusion Principle 8. Noble Gas 9. Valence Configuration 10. Valence Electron

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Q: How many liters (L) of a 0.750 M solution of NH4NO3 is needed to make 3.75 L of a 0.125 M solution…

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Q: Identify the conjugate acid-base pairs in the reaction below. H3PO4(aq) + H2O(l) ⇌ H2PO4-(aq) +…

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Q: Which pair of compounds will form a buffer in aqueous solution? HCN and HCI NaCN and NaOH HCI and…

A: Given pairs of compounds: HCN and HCl NaCN and NaOH HCl and NaCl HCN and NaCN NaCN and KCN HCl and…

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Q: la IUPAC Name B Br Di C cm E OH 6 O th

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Q: Question 18 Tools Question 18 Which of the following substances would give a pH test result greater…

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Q: Question 11 Listen Which of the following involves a chemical change? boiling water melting ice…

A: A chemical change occurs when the chemical characteristics of a substance change, resulting in the…

Q: How many milliliters of 0.125 M KOH are required to completely neutralize 20. mL of 0.200 M HCl?…

A: we have to calculate the volume of KOH needed to neutralize the HCl solution

Q: the enthalpy change AH during the following reaction: CH()+ 3H₂(g)-3C₂H4(9) AH-108. kJ Use this…

A: The thermochemical equations can be treated as algebraic equation which can be added,  subtracted,…

Q: A gas occupies 18.7 L at 2.00 atm pressure and 27°C. How many moles of gas are present in the…

A: Given data -: Pressure = 2.00 atm  Volume = 18.7 L  Temperature = 27o C  To Find -: Number of moles…

Q: IG SCR Which of the following fatty acids represented by their shorthand notations has the lowest…

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Q: An aqueous solution has a hydronium ion concentration of 3.2 × 10-6 M. What is the pH?

A: Hydronium ion concentration is an important parameter of an aqueous solution. The concentration of…

Q: Perform the indicated conversion: 3.06 x 10³ cal =______J O 731 J 1.28 × 10 J 12.8 J 7.31 x 105 J…

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Q: The table below summarizes some of the physical properties of three different materials. Melting…

A: Answer: Three physical states of the substances are possible and those are solid, liquid and gas.…

Q: Liquid octane (CH₂(CH₂) CH₂) will react with gaseous oxygen (0.) to produce gaseous carbon dioxide…

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Q: You transfer a sample of gas at 17°C from a volume of 4.44 L and 1.10 atm to a container at 37°C…

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Q: Identify each of these reactions as precipitation, neutralization, or metal displacement. Mg(s) +…

A: Given reactions: 1. Mg(s) + NiCl2(aq) → Ni(s) + MgCl2(aq) 2. Mg(OH)2(aq) + H2SO4(aq) → MgSO4(aq) +…

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Q: What is an experiment in which neither the experimental unit nor the researcher in contact with the…

A: When a person concerned  in a research study is blinded and does not know who is receiving the…

Q: | HAC CH3 1. mCPBA 2. Н300 Н3С- OH OH CH3 ОН пот OH CH3

A: Alkene reacts with peracid to form epoxide. Then protonation of epoxide takes place followed by…

Q: When the following molecular equation is balanced using the smallest possible integer coefficients,…

A: Since, Balanced reaction means that both side number of atom present in equal number. Thus,

Q: CHEMISTRY (Please write the complete solution legibly. Choose the correct answer. No long…

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Q: Write balanced molecular, ionic, and net ionic equations for the reactions that may occur when the…

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Q: 18. Which of the following is least susceptible to nucleophilic attack? i A. 19. What is the product…

A: Ketones upon reaction with excess alcohol form ketal Hard nucleophile favors 1,2-addition while soft…

Q: The central atom in does not violate the octet rule. KrF2 SF4 CF4 IC14 XcF4

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Q: In the electrochemical cell Cd|Cd+2||Al3+|Al it is fulfilled that: a) Cadmium is oxidizing and…

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Q: What volume of 0.0100 M NaOH must be added to 1.00 L of 0.0500 M HOCl to achieve a pH of 8.00? The…

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Q: Tutorial problem Assign the configurations of the chiral centres, and the alkenes, in each of the…

A: Steps for the determination of absolute configuration of chiral centre: Label the groups as 1, 2, 3…

Q: A quantitative observation is called a measurement. Is this statement true or false? True False

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Q: At a certain temperature, Kc = 4.0 in the following reaction: 2HF(g) ⇌ H2(g) + F2(g) A 1.0 L…

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Q: The equilibrium constant, Kc, for the reaction: 2 NOCI (g) 2 NO (g) + Cl2 (g) is 2.4 x 107. If…

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Q: An old antacid commercial claimed that each tablet of their product could neutralize 47 times its…

A: To determine the number of moles of HCl that a 1.11 g antacid tablet can neutralize, we need to…

Q: In the reaction MgCO3(s)→ MgO(s) + CO₂(g) how many liters of carbon dioxide gas, CO₂, measured at…

A: To solve this problem we have to calculate the volume of carbon dioxide gas .

Q: CHEMISTRY (Please write the complete solution legibly. Choose the correct answer. No long…

A: To solve this problem, you will need to use the equation for calorimetry:   q = mcΔT   where q is…

Q: How many moles of bromine trifluoride are needed to produce 18.1 L of fluorine gas according to the…

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Q: Cd (s)  +  2 H+(aq)    →    Cd2+(aq)   +   H2 (g)    Assign oxidation numbers to each element in…

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Q: A Listeria bacterium swims through a watery medium in a straight line at a constant speed of 5.7…

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Q: Provide the necessary reactants to make these following transformations/l 1) 2) 3) OH NH₂ OH

A: As per the rules only the first question can be answered. Please resubmit for the other question.

Q: Listen Balance the equation CgH187) + O₂(g) → CO₂(g) + H₂O(g) - E

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Q: Which of the following correctly ranks the substances in terms of increasing boiling point? OA. Xe…

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A: Given: The mass of the food substance burned = 2.85 g The heat capacity of the calorimeter = 9.84…

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Q: Name the formula  calcium monohydrogenphosphate

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Q: An atom has a valence shell electron configuration of ns np. To which group of metals in the…

A: Electrons are filled in a different atomic orbital in an atom. According to the Aufbau rule, the…

Q: Would MgCl₂ be classified as ionic or covalent?

A: There are two types of compounds on basis of formation of bond-  1- ionic - if the bond is formed by…

Q: Solid potassium chlorate, KClO4, decomposes to form solid potassium chloride, KCl, and oxygen gas.…

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Q: Question 10 Sodium oxalate reacts with calcium chloride. What is the sum of the coefficients for the…

A: Sodium oxalate reacts with calcium chloride. What is the sum of the coefficients for the reactants…

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.