Protons and neutrons have Mass .......... .... wwwww less O equal O high O Other O specific metal has an atomic weight of 180 g/mol and density of 16.6 g/cm3. It has a BCC structure. Find the atomic radius of metal.

Q: In a sample of MgO held at 1500°C grains of MgO grew from 1um diameter to 10 um diameter in 1 hour. ...

A: Answer: In given data: T = 15000C, diameter= 1 to 10 um. time = 1.0 hrs. Diffusion energy = 250 kJ/m...

Q: A 5.70-g chunk of potassium is dropped into 1.00 kg water at 24.2°C. What is the final temperature o...

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Q: Phosgene is a potent chemical warfare agent that is now outlawed by international agreement. It deco...

A: Given, COCl2(g)⇌CO(g) + Cl2(g) Equilibrium constant (Kc) = 8.3x10-4 Equilibrium concentration of all...

Q: Data Interpretation Instruction: Analyze the table. What can you say about the relationship between ...

A: Introduction :  pH can be defined as the measure of the hydrogen ion concentration of a solution, so...

Q: Strong acid-strong base titration 6) A 100.0 mL sample of 0.18 M HCIO4 is titrated with 0.27 M LIOH....

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Q: K Br B ÕH (-H,) TSCI, pyr O`Nat C A B D

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Q: 1. Explain in 2 sentences how does the definition of “lipid” differ from the types of definitions us...

A: P.S.: According to the company guidelines, we have to answer only the first question. So, please kin...

Q: Question 3 What is the reaction order for the decomposition of p-toluenesulfinic acid? 3 CH3C6H4SO2H...

A: Given reaction is :  Options are : Also, 

Q: Part A A solution of sodium acetate (NaCH;COO) has a pH of 0.72. The acid-dissociation constant for ...

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Q: Write the molecular equation for the reaction of solid barium carbonate and hydrogen bromide in an a...

A: Write molecular reaction between for the reaction of solid BaCO3 and HBr ?

Q: In the electrolysis of an acid solution, oxygen can be produced by the following half-reaction: 2H20...

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Q: What is the true density of Zr, an HCP crystal, in g/cm3? Given: Atomic Number = 40  Atomic Weight =...

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Q: 5. What is the mole fraction of 25% sucrose solution (C12H22011)? Find its concentration. .

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Q: Question 5 In the electrolysis of an acid solution, oxygen can be produced by the following half-rea...

A: Givan data : I = 5.42 A  V(O2) = 12.3 L  T = 22°C = (22+273)k = 295 k  Ptotal (gas) = 99.7 KPa  P(H2...

Q: The attached image shows the different amounts and concentrations for an iodide clock experiment, sh...

A: General Steps to be followed: We have to get the final concentration of solutions after mixing cont...

Q: 2. A solution may contain any of the three group I cations. A white precipitate is formed the additi...

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Q: The percent by mass of nitrogen for a compound is found to be 46.7%. Which of the following could be...

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Q: In the electrolysis of an acid solution, oxygen can be produced by the following half-reaction: 2H20...

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Q: O ADVANCED GENERAL CHEMISTRY Calculating an equilibrium constant from an equilibrium. Nitrogen and h...

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Q: What type of intermolecular interaction in alcohol is responsible for its ability to dissolve polar ...

A: There are various type of intermolecular forces present in molecules such as hydrogen bonding, vande...

Q: A potassium sulfate solution reacts with barium bromide solution to produce a precipitate of barium ...

A: A balanced equation can be defined as the equation in which equal number of atoms of each element ar...

Q: Calculate the pH for each case in the titration of 50.0 mL of 0.230 M HCIO(aq) with 0.230 M KOH(aq)....

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Q: Select the single best answer. Would [32]−, [16]−, or [22]−annulene be aromatic if each ring is pl...

A: Given, [32] - Annulene [16] - Annulene [22] - Annulene All the rings are planar   Required,         ...

Q: The solubility of rubidium nitrate in water is 150 g/L at 20 degree C. A solution is prepared at 20 ...

A: When maximum solute that can dissolve in a solution, is added to the solution, the solution is said ...

Q: initial pressure

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Q: Determine the molarity of a solution with a volume of 402. mL and 0.690 mol of solute dissolved.

A: Given :-  no.of moles of solute = 0.690 mol  volume of solution = 402. mL  To calculate :-  molarity...

Q: A student was attempting the reaction outlined below. The isolated product was analyzed by MS and 1H...

A: We have to determine the structure of the product. And assign all the NMR peaks.  

Q: An equimolar solution of ammonium sulfate, sodium chloride, and magnesium nitrate has an ionic stren...

A: Solution is made up of two components: solute and solvent. Component which is present in major amoun...

Q: Given: Solubility product for a series of hydroxides: BiOOH Ksp = 4.0 x 10-10 = [BiO+][OH-] Be(OH)2 ...

A: a) solubility in water is calculated as : 1) BiOOH    Ksp = [BiO+][OH-] 4.0*10-10 = s2           s =...

Q: Question 1 You were asked to record observations before, during and at the end of the experiment. Be...

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Q: tion 7 action solution is prepared with [S20g2] = 0.0500 M a ction is timed to the point where the r...

A: Initial concentration of [S2O82-] = 0.0500 M As it is consumed by 1.00 %  So, consumed [S2O82- ] = =...

Q: CrO4 2- concentration

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Q: Write the molecular equation for the neutralization of NaOH(ag) solution by aqueous perchloric acid....

A: Given - Reaction between NaOH(aq) and Perchloric acid.  

Q: assiry eacN of the TOlTOwIng substantes: Clear All H+ Lewis Acid BCI3 Lewis Base H20 Can act as eith...

A: We have lewis acid and bases

Q: 6. Consider the equilibrium system Pb3(PO4)2(s) 2CPb2+ 3[PO43] 3PB2+ (aq) + 2PO43- (aq)

A: At equilibrium, the rate of the forward and the reverse reaction is the same and the concentration o...

Q: 44-50. Proposed what are the surface preparation required in joining aluminum and its alloy?

A: Ans. Surface preparation required in joining aluminium: First of all a surface cleaning to remove an...

Q: The "cartoon" shown below is an example of an rRNA cloverleaf. True False

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Q: What are the intermolecular forces present in acetone?

A: Note: As per company policy we are supposed to attempt first question only , please repost other que...

Q: How much heat is removed from the condensation of water at 25°C? Given the standard entropy of the f...

A: In this question we need to find out latent heat of vaporization. Let us solve this step by step. 

Q: If Ka for the acid is 2.51 x 10-5 at 25°C, what is the Kb of the conjugate base? a. 3.98 x 1010 b. 3...

A: Acid can be defined as the substance that give hydrogen ions in solution.and a strong acid have weak...

Q: [Raturances It has been determined that the body can generate 5500 k) of energy during one fiour of ...

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Q: Oxides can react with water to form acids or bases. Identify each of the following oxides as acidic ...

A: All oxides of metals are basic while those of non - metals are acidic  Cl and N are non metals hence...

Q: added to a solvent such as water, which of the following boiling points is not reasonable for the so...

A: As we know,  if we add Non-volatile solute in water , elevation in boiling point takes place. So, bo...

Q: An aqueous solution of hydrofluric acid is 30.0% HF, by mass, and has a density of 1.101 g/mL. What ...

A: X% of a compound by mass means that there is X g of that compound present in a solution of total mas...

Q: Reactions Mechanism Major Product Mechanism Minor Product (Sw1, Sy1, E1, E2) (Sw1, Sw1, E1, E2) t-BU...

A: If the leaving group strength is  not very high, then the reaction proceeds through E2 or SN2 . If s...

Q: The percent by mass of nitrogen for a compound is found to be 30.5%. Which of the following could be...

A: Percentage by mass of element in a compound  = Mass of element  × 100 / Mass of compound

Q: A chemist prepares a mixture of ethanol and water at a temperature of 23.0 °C. He measures out 38.5 ...

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Q: Part A Place the following elements in order of decreasing atomic size: silicon, nitrogen, helium, p...

A: Atomic radius: The distance between the nucleus and the outermost electron is known as the atomic ra...

Q: How many grams of sodium dichromate, Na2 Cr2 07, should be added to a 250.0-mL volumetric flask to p...

A: ★ Answer: 5.04 grams of sodium dichromate should be added.   Na2Cr2O7 =( 22.98×2)+( 51.99×2)+ (15.99...

Q: Quantum numbers are used to determine the properties of .electrons True O False O Metallic bond is a...

A: Given,  Statements is :  1). Quantum numbers are used to determine the properties of electrons  2). ...

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.