How many neutrons are present in a 137Ba²+ ion? (a) 81 (b) 83 (c) 56 (d) 58

Q: Which of the synthesis methods given in I, II, III and IV cannot obtain the molecule given below

A: A question based on reaction of ketones. 4 reactions about formation of tertiary alcohol are given…

Q: Aluminum oxide forms when aluminum reacts with oxygen by the following balanced reaction: 4 Al(s) +…

A: We have to calculate the percentage yield for Al2O3 .

Q: Calculate the solubility at 25 °C of PbCO3 in pure water and in a 0.0120M Pb(NO3), solution. You'll…

A: Molar solubility of a substance is defined as the number of moles of compound that dissolve to give…

Q: For the reaction scheme below, label each reactant as either a Lewis acid/base (LA of LB) of…

A: The given reaction scheme is shown belowWe have to determine each reactant as Lewis acid (LA)/Lewis…

Q: Using the balanced equation: 2C₂H6S(g) +902(g) → 4CO2(g) +2SO₂(g) + 6H₂O(g) and the diagram below,…

A: From the given diagram:The number of units of C2H6S = 3The number of units of O2 = 9

Q: Find the elements of the matrix that must be diagonalized to find the energies of the 2s - 2p states…

A: To find the energies of the 2s - 2p states of hydrogen in the intermediate field regime, we need to…

Q: dentify the species oxidized, the species reduced, the oxidizing agent and the reducing agent in the…

A:

Q: 10 Thu €13 c13dec 5 13C NMR (red coupled, blue decoupled) 200 8 (ppm) 100 8 (ppm) dable 60 IR…

A: The 1H spectrum of the molecule with MW weight =148The chemical shifts are given as1.9ppm doublet,…

Q: 1. Find the molal concentration of a solution containing 8 moles of Sodium Hydroxide and 32 Kg of…

A: Moles of Sodium Hydroxide (NaOH) = 8 molesMass of water = 32 kgTo find the molal concentration of…

Q: Consider the following equilibrium: N₂(g) + 3H₂(g)2NH3(g) AG = -34. KJ Now suppose a reaction vessel…

A: Because, initial amount of H2 gas is not given in atm, so equilibrium of the reaction will shift…

Q: (3) Below are five depictions of a column at various points throughout the loading/ packing process.…

A: 3. (a). A column can be packed in different ways. According to the pictures given the method used…

Q: Calculate the ΔG for the vaporisation of mercury at 24oC using ΔH = 61.0 kJ mol -1and ΔS = 89.0 J…

A:

Q: A weak acid, HA, has a K, of 1.00x105. If 0.100 mole of this acid is dissolved in one liter of…

A: Calculation of degree of dissociation (α) for weak acid (HA) :According to Arheenius' theory of…

Q: his cannot be hand-drawn! The structural formula for 2,6-dimethyloct-2-ene must include: H…

A: ene means double bond present.

Q: Chemistry students prepared 3.00 M of sugar solution at 30°C. Then, they measured the osmotic…

A: As we know,Osmotic pressure, π = i * C * R * TWhere,  i = van't Hoff factorC =molarity= molar…

Q: What is the freezing point of a 0.90 m aqueous solution of potassium hydroxide? 1) 269.8 Kelvin 2)…

A:

Q: 16.At the midpoint of a titration curve for valine A. The concentration of a conjugate base is equal…

A: At the midpoint of a titration curve for valine:A. The concentration of a conjugate base is equal to…

Q: 96. A sample of (S)-(+)-lactic acid was found to have an enantiomeric excess of 72%. How much R…

A: Given that a sample of (S)-(+)-lactic acid was found to have a enantiomeric excess of 72%, that…

Q: The group wanted their water cooled when they took the water out from the thermos flask. They…

A: We may apply the idea of energy conservation to determine the equilibrium temperature. The heat that…

Q: What is the purpose of recrytallizing an organic compound?

A: The purpose of recrystallizing an organic compound is to purify it by the removing of impurities.…

Q: Determine the oxidation state and d configuration of the iridium metals and the bond order for the…

A: Iridium belongs to group-9 of the d-block in the periodic table. Electron configuration : [Xe] 4f14…

Q: In which of the following pure substances would hydrogen bonding be expected? (Select all that…

A: Hydrogen bonding : is a strong electrostatic force of attraction between the hydrogen atom and a…

Q: What is the value of K for this aqueous reaction at 298 K? K= A+B=C+D AG= 27.95 kJ/mol

A:

Q: In 1c, the head groups are in the aqueous phase. Why would this affect the membrane fluidity?

A: Choline head groups are the substituents attached to phosphate group in phospholipids. The graph…

Q: Hydrogen peroxide, H2O2, is a strong oxidizing agent. It is used as an antiseptic in a 3.0% aqueous…

A:

Q: We measure the absorbance of a protein solution with the concentration 0.006M, which absorbs at…

A: Concentration (c) of protein solution = 0.006 MPath length (l) of cuvette = 1 cm molar absorptivity…

Q: Mark each chirality center in each molecule with an asterisk

A: Stereochemistry is the branch of chemistry that deals with isomers that differ in the spatial…

Q: Click the "draw structure" button to launch the drawing utility. Complete the following reaction by…

A: A question based on stoichiometry. A reaction with products is given whose missing reactant is to be…

Q: 1. A sample of radioactive iodine-131 atoms has a half-life of about 8 days. Suppose that 1 000 000…

A:

Q: Identify the following as strong/weak/not an electrolyte. For any acids also identify them as a…

A: An electrolyte is a substance that, when dissolved in a solvent (typically water), produces ions and…

Q: Give the name of the missing organic reactant in the following reaction. ? + 2 Ag(NH3)2+ + 3 OH 0…

A:

Q: Sulfur atoms combine to form molecules that have different numbers of atoms depending on the…

A: given reaction S8 (g)   ⇌  4  S2 (g) at equilibrium positionThe equilibrium constant  (KC ) =…

Q: Draw a Lewis structure for the molecular formula: NOCl This molecule only contains nitrogen,…

A: We have to draw the Lewis structure of NOCl and determine the geometry of electron groups around…

Q: 23.Compare solution A with pH = 4 to a solution B with pH = 6. A. The concentration of hydronium ion…

A: We have pH scale to measure the concentration of Hydrogen/Hydronium ion present in the solution. pH…

Q: A sample of gas has a volume of 597 ml at a pressure of 4.19 atm. The gas is allowed to expand and…

A:

Q: 1. Is the molecule shown below chiral or achiral? ОН ОН

A: A question based on introduction to organic chemistry. An organic structure is given whose chirality…

Q: 5) A solution is made by combining 75.0 mL of 0.0040 M Na2SO4 and 25.0 mL of 0.080 M AgNO3.…

A: Volume of Na2SO4 solution = 75 mLConcentration of Na2SO4 solution = 0.004 MVolume of AgNO3 solution…

Q: For the compound below suggest, with reasons, its likely physical properties, and explain at least…

A: We have find out the answer.

Q: What is the coordination number (CN) and the geometry of the following metal complex? [Zn(bpy)3]Cl2

A: Coordination number of any complex is the number of points of attachment between the ligands and the…

Q: An analytical chemist is titrating 166.5 mL of a 0.6300M solution of hydrazoic acid (HN3) with a…

A:

Q: Calculate the hydroxide ion concentration in an aqueous 0.000125 M HClO4 solution.  x 10^ M OH-

A: [H3O+][OH-] = 1 x 10-14

Q: Which of the following bonds is the shortest in length? (a) C-O (b) C-Si O=O C-Br (d)

A: A question based on introduction to chemistry. 4 options are given that are to be distinguished…

Q: 2. Draw enantiomers for each of the following using. a. perspective formulas. b. Fischer…

A: In both there is one chiral center and therefore two isomers exist in both compound.

Q: Given the following information, A₂ + 3 B₂ K = 1.5 AB3 K = 3.3 2 AB3 AB + B₂ calculate the…

A:

Q: Calculate the concentration of the products of the following equilibrium when the equilibrium…

A: Equilibrium constant= 12.3 Equilibrium concentration of NOBr2 = 2.17

Q: 4. Calculate the equilibrium constant for the following systems: a. N₂(g) + 3 H₂(g) 2 NH3(g), where…

A: Equilibrium constant is ratio of concentration of products and reactants.

Q: C6H12O6 + a*O2 + b*NH3 --> c*CH1.64O0.52N0.16 + d*CO2 + e*H2O + f*C2H5OH In the aerobic yeast…

A: To calculate the moles of oxygen needed per mole of glucose, we can compare the stoichiometric…

Q: Consider the following equilibrium: 2NOC1 (g) 2NO(g) + Cl₂ (g) AG = 41. kJ Now suppose a reaction…

A: Change in Gibbs free energy of the reaction = 41 kJTemperature = 869 0CInitial pressure of NOCl =…

Q: At a certain temperature, the equilibrium constant K for the following reaction is 575.: H₂(g) +…

A: The equilibrium constant of the chemical reaction is the value of the rate…

Q: 25. In a solution containing 10-8 M HCI and 10-8 M acetic acid, H* is supplied mostly by A. The…

A: In a solution containing 10 M HCl and 10 M acetic acid, H+ is supplied mostly by:A. The strong…

Atomic Structure

The basic structure of an atom is defined as the component-level of atomic structure of an atom. Precisely speaking an atom consists of three major subatomic particles which are protons, neutrons, and electrons. Many theories have been stated for explaining the structure of an atom.

Shape of the D Orbital

Shapes of orbitals are an approximate representation of boundaries in space for finding electrons occupied in that respective orbital. D orbitals are known to have a clover leaf shape or dumbbell inside where electrons can be found.