Inorganic Chemistry questions and answers in April 2023

choose the correct option. "Fusion" and "sublimation" describe the changes in state from solid to liquid & liquid to gas solid to liquid & solid to gas liquid to solid & liquid to ...
For the following reaction, Kc = 255 at 1000 K. CO (g) + Cl2 (g) ⇌ COCl2 (g) A) If a reaction mixture initially contains a CO concentration of 0.1490 M and a Cl2 concentration of 0.177 M at 1000 K. ...
Hi  I need answers to these questions for my assessment:   1. The elementary steps in a mechanism must add up to the overall equation. Question 1 options:                 True    ?...
Do question 2, I believe question 1 is correct so you can use the information to answer question 2   . C172/C272, Spring 2023 Exercise #1 (Due: Apr. 28th) Write down your name and UID number here: Q...
1)Name this species: K 2 [Fe(CN) 6 ] 2)Many metals form homoleptic carbonyl complexes of the formula M(CO) x and transition metal carbonyls usually follow the 18 electron rule.  Predict the value for...
Determining the Enthalpy of a Neutralization Reaction.  In this investigation, you will study the reaction between a hydrochloric acid solution and a sodium hydroxide solution. This neutralization re...
Discuss and summarize how we calculate pH of different states of a polyprotic systems.   For example: sodium monohydrogen phosphate, glycine hydrochloride, citric acid, trisodium citrate, potassium h...
 . 22. Crystal-field theory is based on: a. The Coulombic attraction between the charge of the metal and the lone pairs of the ligands. b. The Coulombic attraction between an electron in a metal d-or...
 . 31. (6 marks) The diagrams below are frameworks to describe the band structure for an extrinsic n- type semiconductor. At 0 K: At 298 K: Density of States Density of States a. (1 mark) If the semi...
The dipole moment of HBr is 0.80D and the distance between the atoms of H−Br is 1.41Å. a) What is the charge associated with each side of the HBr molecule? b) What is the percent ionic character of...
 . A 30.00 mL sample of a solution containing nitrous acid (HNO2) is titrated with 2.000 x 10-2 mol L-' NaOH(aq). The equivalence point is reached when 8.30 mL of NaOH(aq) solution is added. What is ...
I need help with questions 2 and 3. . 2. Would the experimental MW be greater than or less than the true value if: 3) Your sample was not fiJlly vaporized? b) The actual barometric pressure was subs...
 . Ammonia, NH3(g), at a pressure of 1.50 bar, is placed in a container at a given temperature. The following equilibrium is then established: NH, (g) - 3 H, (g) + N.(8) At equilibrium, the partial p...
11. (8 marks) Without drawing the entire structure of heme, please show the coordination environment of iron in hemoglobin. Show the change in coordination environment with and without dioxygen. By ca...
I did an experiment with the aim of trying to find the effect temperature has on the voltage produced by a copper and aluminium galvanic cell.  My results showed that as the temperature increased (15...
Draw four Lewis structures corresponding to a) OF 2 with O as the central atom, b) OF 2 with F as the central atom, c) N 2 O with N as the central atom, and Calculate the formal charges and use formal...
 . Each of the insoluble salts below are put into 0.10 M hydrobromic acid solution. Do you expect their solubility to be more, less, or about the same as in a pure water solution ? Clear All silver b...
Answer only first 5 questions on a page M4. Thanks!. CHM122 / LAB M: Acids & Bases Name: Telzaveta Rostick Group Members: Cofunce Lilla , A Caters Ethan Date: 9- 12-23 Part I: Acid-Base Indicators...
Question 7 or 8 or please answer both. 7. (8 marks) Using a graph, show the overlap integral with respect to change in "radius" (i.e., separation) and angle for an s - p orbital overlap. 8. ...
(1) (2)   (3)   (4)  . What is the largest source of error in this experiment? How would you eliminate this error if you were to repeat the experiment?. List two other strong acid and strong base c...
Describe differences and similarities in bonding, structure and reactivity (using HCl as an example) between borazene, (HBNH)3, and benzene, C6H6.  Briefly explain (in one or two sentences) the follo...
Need Asap       . 11:44 @ 1 LTE2 KB/s 4G .ill .ill 56% Activities and Exploratio . . . Activities and Explorations #6: 10 points, Due April 30th at 11:59 PM PhET simulation: Molecular Shapes Uploa...
Solve an equilibrium problem (using an ICE table) to calculate the pH of each of the following solutions.   Part A: a solution that is 0.170M in HC2H3O2 and 0.125M in KC2H3O2 Express your answer to t...
A first-order reaction has a half-life of 2.2 h. If the initial concentration is 132 nM, how long will it take for the concentration to fall to 84 nM? Give your answer in h to two decimal places. You ...
Which of the following reactions are redox reactions? Check all that apply. 0 4K (s) + 02 (g) -2K20 (s) 0 Mg (s) + Br2 (1) -MgBr2 (s) O SO3 (g) + H2O (1) -H2SO4 (aq) O Al (s) + 3Ag+ (aq) -Al's+ (aq) +...
Use the standard reduction potentials in the table to create a galvanic cell with the highest possible standard cell voltage, Half-Reaction E'(Volts) F, (g) + 2e - 2F (aq) +2.87 Cl, (g) + 2e - 2CI (aq...
87.5% of radioactive substance A and 50% of radioactive substance B disintegrated in 300 yrs. A mixture of 1 mole of substance A and 1 mole of substance B is taken. What percentage of this mixture rem...
   . Consider the following energy levels of a hypothetical atom: Ex : -1.11 x 10 19 J E3 : -4.51 x 10 -19 J E, : -1.35 x 10 18 J E : -1.65 x 10 18 J Part 1 of 3 What is the wavelength of the photon...
 . Sodium Chloride (NaCl), or rock salt, crystallizes as a cubic unit cell. The unit cell edge is 5.639 A. (Show all work) (a) If the radius of a Na ion is 1.02 A, what is the radius ofthe chloride i...
Cytochrome Paso is an iron-containing protein that is responsible for many oxygenation reactions, including oxygenation of C-H bonds to produce alcohols (C-OH). The mechanism is shown in the box below...
12.1 The high-spin d4 complex [Cr(H2O)6]2+ is labile, but the low-spin d4 complex ion [Cr(CN)6]4- is inert. Explain.   12.2 Why is the existence of a series of entering groups with different rate con...
Solid Lithium hydroxide and carbon dioxide gas react to produce aqueous lithium carbonate and water. What mass in g of lithium carbonate is produced when 5.92g of lithium hydroxide reacts with 3.66g o...
 . Question 8 (4 points) Listen Which of the following is evidence of an Associative Substitution mechanism? Assume your reacting complex is square planar geometry. Select all that apply. Rate of sub...
 . Consider the combustion of methane in oxygen (a reaction we've seen when we've lit soap bubbles on fire), which is a highly exothermic reaction. | A successful collision (one that leads to the com...
A student wanted to make large alum crystals, larger than what was made in the lab.  Her goal was to make a crystal with a mass of 100.0 grams.  Assuming the percent yield of the process 75.00 %, wh...
Q.2 please solve part B. Calculate the percent ionization of 0.135 M lactic acid (Ka = 1.4 x 10-4). Express the percent ionization to two significant figures. View Available Hint(s) 3.2 % Submit Previ...
 . 9. Volume of dry H2 gas at STP (V2) mL Calculation (eq. 2): 10. Moles of H2 gas released mol Calculation (eq. 3): 11. Moles of Mg consumed mol 12. Molar mass of magnesium g/mol Calculation (eq. 1)...
Hello, I need help doing the mechanism for this Hetero-Diels Alder Reaction presented on the left. I need to perform this mechanism in order to form the two products presented on the right. I have loo...
N.(9) + 20.(g) 1 66.2kJ - 2N2(9) Predict the direction of equilibrium that will be favored (forward, reverse or neither) for each of the following changes: Na added Oz removed The temperature is incre...
 . You are handed a 500.0 mL volumetric flask of aqueous monoprotic acid, HX, where X is a polyatomic ion. You are only told that the solution was prepared using 1.98 mL pure HX (d = 1.09 g/mL) and ...
For the fast oxidation reaction of NO to NO2, 2 NO ( g ) + O2 ( g ) -> 2 NO2 ( g ), the rate law is observed to be v = k [NO]2[O2 ]. Which of the following statements is true?   1)  This reaction...
 . a. Identify each of the following half-reactions as either an oxidation half-reaction or a reduction half-reaction. Half-reaction Identification Cl2 (g) + 2e-- 2CI (aq) Ni(s) - Ni2+ (aq) + 2e- b. ...
 . Calculate the cell potential and the equilibrium constant for the following reaction at 298 K: Sn2+(aq) + Cu{s) —> Snts) + Cu2+taq) Hint: Carry at least 5 significant figures during intermedi...
Consider a 1.0 L of 0.1 M aqueous solution consisting of weak acid HA, which has Ka=3.9x10^-4 at room temperature. Assume that A- is neutral (i.e. does not influence the pH). What would be the pH of t...
 . 4. A student titrates 20.0 mL of 1.84 M HCI with a weak base (Kb = 2.33 x 10 6). The weak base and HCI react in a 1:1 ratio. a. Determine the molarity of the weak base if 32.7 ml of base was requi...
 . 13. As the temperature of water is increased above 25 .C the pH decreases. Which of the statements below about water is true? E) F) The POH of water is greater than 7 at temperatures greater than ...
1) 2)   3)   4)   5)   6)   6)    . The value of AE for a system that performs lllkJ of work on its surroundings and gains 89 id of heat is Id. '11:? A) 22 (I) B) -111 (3' c) -22 C} D) 200 '1: ...
 . When the following equation is balanced properly under basic conditions, what are the coefficients of the species shown? C] Br2 + [:szogz'eD Br' + D5032- Water appears in the balanced equation as ...
The K value for the reaction in Q5 is 1.0x10-2. This equilibrium    select one : reactants  neither  products  PO4 3- applied to farmland runs off into rivers and lakes, it stimulates the growth ...
A 117.96 mL sample of 0.219 M aqueous hydrochloric acid is added to 127.47 mL of 0.252 M aqueous ammonia in a calorimeter whose heat capacity (excluding any water) is 461.677 J/K.  The following reac...
Pentaborane B 5 H 9 (s) burns vigorously in O 2 to give B 2 O 3 (s) and H 2 O(l). Calculate the heat given off, in kJ, for the combustion of 148.82 g of B 5 H 9 .           ΔH° f [B 2 O 3 (s)]...
Rhocine (Rhx) is important for biological energy.  The reaction of rhocine is given by the equation           4Rhx(s) + 9 B(g)  →  8 C(g) + 10 D(l) + F(g)       ΔH° rxn = -3,970 kJ/...
Hey can you help me with this? Take your time.. What mass of limestone, in kilograms, should be added for 1.00 kilogram of iron ore processed in a blast furnace if the limestone is 95.5 % CaCO3 and th...
Balance the following chemical reactions by placing the correct coefficient in front of the compounds.  Be sure to show your work.  Label the type of each chemical reaction. (7 points each)    (pr...
   . The rate constant of a chemical reaction increased from 0.100 s—1 to 3.30 5—1 upon raising the temperature from 25.0 °C to 39.0 °C . V PartA Calculate the value of (Ti — Ti) where T1 is...
1)Micelles formed from surfactants in water have a core composed of hydrophobic groups and a shell composed of hydrophilic groups.   2)Surfactant solution with higher CMC value can form micelles more...
Can you complete the chart please with correct units. Complete the following table by calculating the missing entries. In each case indicate whether the solution is acidic or basic. Complete the first...
 . Consider the following equilibrium: Cuz (aq) + 4NH3(aq) = Cu(NH3)4 (aq) (Kf = 4.8e+12) A solution is made by mixing 12.0 mL of 1.00 M Cus04 and 1.50 L of 0.590 M NH3. Assume additive volumes to an...
 . 6.1 Assign oxidation numbers for each of the elements participating in the following reactions. 2 NO(g) + 0,(g) - 2NO,(g) 2 Mn'+(aq) + 2H,O(1) - MnO,(s) + Mn2+(aq) + 4H*(aq) LiCoO,(s) + C(s) - Lic...
 . A first order reaction, where [A], = 1.00 M, is 67.5 % complete in 349 s. How long does it take for the same reaction to go from 1.00 M to 86.9 % completion? Submit Answer Tries 0/45. Kinetic data...
 . 5 CIO3" + 3 Br2 + 6 OH- 6 Bro3 + 5 Cl- + 3 H20 In the above reaction, the oxidation state of bromine changes from V to V How many electrons are transferred in the reaction?. Identify the spec...
 . For the dissolving of ammonium nitrate in water, DH = 25.7 kJ/mol and DS = 108.7 J/mol.K. Calculate the Ksp for the process at 298 K. Answer:. The Ksp of silver bromide is 5.4 x 10713 at 298 K. Wh...
Consider the concentration of Fe2+ at the anode of our beaker sketch. It starts at the standard state, with [Fe2+] = 1.00 M. How will this concentration change as the electrochemical cell runs?   It ...
While everyone hasn't read or seen Hamlet, it could be argued that Hamlet is instantly recognizable in pop culture: a figure in black, holding a skull, and muttering "to be or not to be." This is fun...
Please Help with Part A. Part A Substance AH? (kJ/mol) AG; (kJ/mol) So [J/K . mol] and State Use the data in the table to decide whether synthesis of the following compounds from their constituent ele...
Please Help with Part H and Part I ΔH = -471.3 kJ    . Part H Use the data in the table to calculate the following quantities. Substance and State AH (kJ/mol) So [J/(K . mol)] Calculate AS for the ...
Minich, M., Falk, E. B., Cooper, N., Cosme, D., Chan, H. Y., Pei, R., O'Donnell, M. B., & Casico, C. N. (2023). Neural correlates associated with conformity in adolescent and young adult men. Deve...
 . 2. Answer ALL parts. (a) Compounds A to F are intermediates in a catalytic cycle. Pr2 ipr2 Pr2 P Ph Pd. Pd - P Pipr2 CI ipr z P JU ipr2 Prz A B C ipr 2P Pr2 P C ipr2 Pr2 -C Pd Ph Ph P Ph Pr2 Ph D ...
calculate the initial concentrations at the moment of mixing before the reaction occurs of H2O2 and I- and Vitimin C for this expirement where the values given are: 2.0 mL of VitC/I2 solution, 2.0 mL ...
For each of the below organometallic complexes, assign an electron count for the central metal ion (following our discussion of the 18 electron "rule"). For the 4 compounds on the left, the electron c...
 . 4. Match the symmetry of the reducible representations in problem 3 to all U orbitals which have the correct symmetry to form bonding and anti-bonding molecular orbitals. First tip: consider where...
A solution is 0.01 M Ba2+ cations and, 0.02 M Ca2+ cations. If solid Na2SO4 is added.to the solution to selectively precipitate one of the cations while leaving the other cation in solution, [ SELECT ...
 . A reaction vessel initially contains SO:Clz at a partial pressure of 2.5 bar. Over time, the following chemical reaction takes place. At equilibrium, the partial pressure of chlorine (Clz) is 0.20...
 . A chemistry graduate student is studying the rate of this reaction: 2503 (g) —~ 2502 (g) + 02 (g) He fills a reaction vessel with SO3 and measures its concentration as the reaction proceeds: (mi...
use the references provided above to fill in the green highlighted boxes below :  . Equilibria In . Chemistry 1128 - Spring 2023 Determination of an Equilibrium Constant We have seen that chemical re...
 . The reform reaction between steam and gaseous methane (CH) produces "synthesis gas," a mixture of carbon monoxide gas and dihydrogen gas. Synthesis gas is one of the most widely used ind...
 . Some measurements of the initial rate of a certain reaction are given in the table below. [N2] [H2] initial rate of reaction 1.17M 2.14M 73.0M/s 1.32M 2.14M 92.9M/S 1.17Mr 0.652M Use this informat...
Please help with part b please. Partial Pressure The equilibrium constant, K, of a reaction at a particular temperature is determined Gas atm) by the concentrations or pressures of the reactants and p...
All four with clear workings please.. (e) The indicator phenolphthalein is synthesised by reacting phthalic anhydride with phenol as shown in the following equation. OH OH =0 conc H2SO4 OH + H20 O + 2...