Which of the following statements about the alkaline earth metals are true? A) The filled orbital that is highest in energy is ns², where n is an integer equal to the period the element is in. B) They form 2+ cations. C) They form cations with the electron configuration of the noble gas element that comes before them. D) Both B) and C) above E) A), B), and C) above

Q: Home Use the following information tools answer the next question. Potential Energy Diagram E, (kJ)…

A: We have given a potential energy diagram. We have to identify change in enthalpy for forward and…

Q: Chemistry 3. (6%) Ca(HCO3 ) 2 is called calcium bicarbonate. It is one of the most abundant…

A: •In first question, we have to calculate the the molar concentration of HCO3-, normal concentration…

Q: and 12 2Fe(s) + O2(g) + 2H₂O(1) →2Fe(OH)2 (s) Express your answers in moles to three significant…

A: Given -> Mole of Fe = 1.75 mole

Q: A student carried out the synthesis described in this experiment. In the first step of the…

A:

Q: 4)Suppose the following chemical reaction can take place in this mixture: 2SO2(g)+02(g)2SO3(g) of…

A:

Q: A zeroth order reaction has the rate constant of 5.09 x 10-3 Ms-1, How long would it take to…

A:

Q: Use the data in Thermodynamic Properties and the bond energy in Bond Energies to determine the…

A: 1.)The structure of benzene (C6H6) is shown below. There you can see that there are six carbon atoms…

Q: The equilibrium constant, Kp, for the following reaction is 1.80×10-² at 698 K. 2HI(g) 2 H₂(g) +…

A: The given two problems are same.  The answer of the problem can be given from the relationship of…

Q: How was the j/g found at the beginning of the conversion mechanism. The the number is just kind of…

A: To convert the heat of fusion ans heat of vaporization from kJ/mol to J/g , the conversion factor…

Q: The number of electrons in the valency shell of Li, Na, K is ONE. True False

A: Group 1A of the periodic table are the alkali metals. Elements present in group 1A is given below.…

Q: СН3 3 C(CH H

A: Stereochemistry is branch of chemistry in which we define the three dimensional arrangement of atoms…

Q: how we get from molarity to osmolarity?

A: Molarity and Osmolarity are related to each other as follows :

Q: Why was the tea extract washed with three separate portions of 20 ml of CH2Cl2 instead of 60 ml at…

A: The caffeine from tea can be extracted from solvent extraction principle. The tea extract is soluble…

Q: Provide the correct IUPAC name for the skeletal (line-bond) structure shown here. * 2,2,3,3-3,3-…

A:

Q: a) which type of transformation do you perform so that the transformed data resembles a straight…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: F. Electron-Dot Formulas and Shape Formula 1. Electron- Dot 2. Number of 3. Electron- Formula…

A: we have to complete the table of electron dot formula and shape for the molecules  H2O SF2

Q: Starting from the Newman projection below, rotate the back carbon to provide the structure in an…

A: We have given a newmann projection. We are asked to rotate the back carbon to provide structure in…

Q: sample of an ideal gas at 1.00 bar and a volume of 1.37 L was placed in a weighted balloon and…

A: Given -> Initial pressure (P1) = 1.00 bar  Initial volume (V1) = 1.37 L Final pressure (P2) =…

Q: Determine the product(s) in the reaction below. A. D. A and C A с D E CI OH + HCI B. OH E. B and C…

A: Three membered rings formed by two carbon and one oxygen atom is known as epoxide ring. The…

Q: Student Name: 1. Rate data was observed for the following chemical reaction: 2 CIO2 (g) + 2 OH (g)…

A: Given , reaction : 2CIO2(g) +2OH-(g) →CIO3-(g)  +CIO3-(g) +CIO2-+H2O

Q: НН a) Cl-c-c-Br Н Н OH H-C-H H-C-OH d) НО-С-Н H-C-OH НО-С-Н H-C-OH OH 9) b) e) H CI H Br-c-c-c-CI H…

A: Chiral carbon is carbon which contains all four different group or atoms .

Q: Consider the RedOx titration of 20 mL of 0.5 M U4+with a 0.2 M MnO solution at 25 °C, using this…

A: “Since you have posted a question with multiple sub-parts, we will solve the first three subparts…

Q: #6: Polystyrene (CAS# 9003-53-6) can be produced in 60°C toluene using a di-t-butylperoxide…

A:

Q: An irreversible process... A) cannot be reversed in any way B) has sudden external changes C) stays…

A: An irreversible process ...

Q: Butane (C4H10) is the liquid fuel in lighters. How many grams of carbon are present within a lighter…

A: Given data : Volume of butane = 7.25 mL Density of butane = 0.601 g/mL Molar mass of carbon = 12.01…

Q: Malachite is a green copper mineral with the formula Cu₂CO3(OH)2. It can be converted into copper…

A: Given that,  Malachite reacts with H2SO4 to form CuSO4  Cu2CO3(OH)2 + 2H2SO4 → 2CuSO4 + 3H2O + CO2…

Q: If the Mn of a batch of LDPE is 3.2x109 g/mol, what is the corresponding full contour length in…

A: Given: The molar mass of LDPE is 3.2 x 109 g/mol To calculate: Full contour length in Angstroms (Ao)…

Q: A student incorrectly names an organic molecule as 6-propylheptanal. Draw this structure

A: Answer: Given name is incorrect according to IUPAC system.

Q: At a given temperature, the elementary reaction AB, in the forward direction, is first order in A…

A:

Q: Calculate the average translational kinetic energy, Ex, for one mole of gas at 669 K. Translational…

A: Answer: In both the questions we have to calculate the average kinetic energy of gas particles at…

Q: A certain weak base has a ?b of 8.10×10−7. What concentration of this base will produce a pH of…

A:

Q: n H₂C: isobutylene CH3 CH₂ CH3 A CH₁₂ n poly(isobutylene)

A:

Q: For the chemical reaction HCIO (aq) + NaOH(aq) → H₂O(1) + NaClO4 (aq) write the net ionic equation,…

A: Given chemical reaction is, HClO4 (aq) + NaOH(aq) ---------> H2O(l) + NaClO4(aq) To find out net…

Q: Organic Chem II：what is important about this picture？what does it tell us？

A: Organic reactions of those in which organic reactant react to form organic product. In the given…

Q: If the ?a of a monoprotic weak acid is 7.8×10^−6, what is the pH of a 0.12 M solution of this acid

A:

Q: Using the equation below, how many g of Cu(OH)2 are required to react completely with 26.6 m of a…

A:

Q: Starting from the wedge-and-dash structure below (sighting down the indicated bond). Rotate the back…

A:

Q: If 34.0 L of a gas is collected at 21 °C and 135 kPa, what is its volume at STP? V = L

A:

Q: A chemical engineer must report the average volume of a certain pollutant produced by the plants…

A: Given -> Volume of South fork(V1) = 0.7 L Volume of Oglala(V2) = 1.71 L Volume of cross creek…

Q: Fill in the blanks in the following table with the correct term: Solution A = 2 OSM glucose Solution…

A: The given table is A = 2 OsM glucose Solution B = 1 OsM glucose Solution C = 1 OsM NaCl A is…

Q: 3. Given that Ea for a certain biological reaction is 48 kJ/mol and that the rate constant is 2.5 x…

A:

Q: At 1 atm, how much energy is required to heat 87.0 g H₂O(s) at -18.0 °C to H₂O(g) at 135.0 °C?

A: We are asked to calculate energy to convert 87.0g H2O(s) at -18.0°C to H2O(g) at 135.0°C

Q: 2. In a titration, 50.00 mL of 0.875 M HCl solution was titrated with 0.506 M NaOH solution. What…

A: Sodium hydroxide reacts with hydrochloric acid, to form sodium chloride and water. The equation for…

Q: How many grams of PbBr2 will prec Itate when excess MnBr₂ solution is added to 42.0 mL of 0.556 M…

A:

Q: 5.9) How much energy would be required to vaporize (boil) 50.0 grams of each of the following…

A: Given data;

Q: A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration…

A: Note: As per the guidelines solution of first question has been made. For the expert solution of…

Q: 5.A. Syrup, USP is prepared by dissolving 850 g of sucrose in sufficient purified water to make 1000…

A:

Q: 1. Given the mass of U-238 is 238.0003 amu, Th-234 is 233.9942 amu and He-4 is 4.0015 amu, calculate…

A: Here, due to alpha decay some mass loss occurs and that lost mass is converted to energy. From…

Q: Can you answer this question and explain it

A: Given reactions:

Q: The phase diagram for a compound X is illustrated below. (un) sincent 2.0 1.5 1.0 0.5 V 20 40 60 80…

A: When a solute is dissolved in a pure solvent then the vapour pressure of the solution decreases due…

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.