What is the ΔH of the reaction KS→K+S? K+S→KS ΔH=+32.5 kJ KS+K→K2S ΔH=+38.2 kJ A +32.5 kJ B +6 kJ C +70.7 kJ D -32.5 kJ

Q: 18/8 stainless steel is made up of 18% (m/m) chromium and 8% (m/m) nickel in iron. What mass of…

A: The mass of chromium can be calculated as follows

Q: How many kilojoules are carried by one mole of photons of violet light with X = 400 nm? %3D O 184 kJ…

A:

Q: Considering Le Chatelier's Principle and the reaction shown below, how would the following changes…

A: Le Chatelier principle says that equilibrium will shift in such away so as to undo the effect of…

Q: Q8/ Determine the operating temperature for 90% conversion required to produce 400 kg of- in 6000…

A:

Q: A. Hydrocarbons Alkanes 1. CH4 (methane) Projection Drawing: Perspective Drawing: H. H-C-H H. a.…

A: Alkane is saturated hydrocarbon. Alkane have sp3 hydrocarbon . Alkane have tetrahedral geometry and…

Q: As a concerned individual, this calls for an act to mitigate the problem on ocean acidification…

A: The answer is attached below-

Q: Because it is difficult to measure the mass of a sample of a helium, a student transferred the…

A:

Q: All of the following statements are false for the spontaneous combustion of hydrogen gas at 400 K…

A: Given: Spontaneous combustion of hydrogen gas at 400 K  For a reaction to be spontaneous, ∆G < 0…

Q: The ff. statements are incorrect, EXCEPT: I. Molecules undergo electronic transitions only during…

A:

Q: Use the following reaction to answer questions 2 - 11: Mg(s) + 2 A9CI(aq) 2 MgCl,(aq) + 2 Ag(s) 2.…

A: The correct answer is given below

Q: What intermolecular force is responsible for the fact that ice is less dense than liquid water?

A: Hydrogen bonding exist between hydrogen atom of one molecule and a highly electronegative atoms such…

Q: Which of the following is NOT true for light modeled as a wave? O Wavelength is the distance between…

A: Here give light act as wave.

Q: A buffer consists of 0.150 M acid, HA, and 0.200 M of its conjugate base, A. If HA has a K, of 4.84…

A:

Q: 04 on OH OH

A:

Q: (C). Organic peroxides exhibit as characteristic functional group oxygen-oxygen single covalent bond…

A: This question belong to organic reaction mechanism. Here there are no difference in…

Q: 18. A 0.0035 M aqueous solution of a particular compound has a pH = 2.46. The compound is: A) a…

A:

Q: Assign the configuration (R/S) of all of the stereocenters below. OCH3 N.

A:

Q: is

A:

Q: Cd2* forms a stable complex with EDTA. Consider the titration of 30.00 mL of 0.0525 M Cd" with 0.125…

A: The reaction between Cd2+ and EDTA takes place in the following way :Cd2+  +  EDTA  →…

Q: A hypothetical element exists as two isotopes: I = 85.50 amu and II = 88.70 amu. If the percent…

A:

Q: What is the original base of the conjugate acid NH4+

A: Conjugate acid contains one more proton than base from which Conjugate acid generate.

Q: 1. If 30.00 ml of a 0.300 mol/L of a weak acid, CH,CO,H (aq), is titrated with a 0.300 mol/L…

A:

Q: For 300.0 mL of a buffer solution that is 0.245 M in HCHO, and 0.300 M in KCHO,, calculate the…

A: Initial pH is calculated using Henderson Hasselbalch and.  Then to calculate final pH after adding…

Q: Provide such a synthesis plan for the retrosynthesis that follows. Any additional substances are…

A: We have to carry out the given retrosynthesis. The retrosynthesis is given below

Q: Enthalpy (H) (B) (A) (C) (D) Reaction Progress Considering the energy profile and the reaction…

A: Given energy diagram:

Q: 11. What is the number of moles of H20 produced if you combust 0.5 mole of CH4 according to the…

A: In this question, students want to solve only question number 11 so I solved only question number…

Q: comprehensively describe and cite a simple yet practical example on how the Lean Six Sigma can be…

A: Introduction- It is imperative that health care settings have quality improvement strategies. Lean…

Q: A gas is at pressure of 956 mmHg and a volume of 3.0 L . If the volume is decreased to 2.o L what is…

A: A/c to Boyle's law at constant temperature pressure of as gas is inversely proportional to volume of…

Q: Chemistry If you prepare a 500 mL phosphate buffer solution using 3.00g Disodium Phosphate Dihydrate…

A: Given :  Volume of buffer solution = 500 ml  Mass of Disodium Phosphate Dihydrate = 3.00 gm  Mass of…

Q: What is the pH of a 0.015 M aqueous solution of barium hydroxide? A) 12.18 B) 12.35 C) 1.82 D)…

A:

Q: The reaction of 2-methylpropene with HBr in ether is described below. Answer the following questions…

A: 1.) In this reaction , HBr adds on double bond to give a single bond .  In this reaction , first H+…

Q: Consider the following dissociation reaction of iodine at 1000 K: 2(g) = 21(g) The following data is…

A: Solutions                              Given that Consider the following dissociation reaction of…

Q: The crystal structure of [Cu(H2O)6]2+ displays axial bond lengths of 238 pm and equatorial bond…

A: The shape of transition metal complexes is determined by the tendancy of electron pairs to occupy…

Q: EX/ When 3.0 mol O2 (linear molecule) is heated at a constant pressure of 3.25 atm, its temperature…

A:

Q: What did Zimmerman and Traxler have to say about the transition states and product outcomes of…

A: The Zimmerman and Traxler stated that- if lithium enolate is z/cis, then product will be syn and if…

Q: How many mL of solvent should be added to 0.99L of a 1.5M solution if you want a final concentration…

A: ★ Answer : 1016 mL of solvent should be added to 0.99L of a 1.5 M solution. ★ Solution  In this case…

Q: According to the solubility chart, is zinc hydroxide soluble or insoluble in water?   Question 21…

A: Question 21 A solubility chart gives information about the solubility of ions when mixed with other…

Q: For a certain reaction changeH֯ =-83.5 kJ and changeSͦ =-148 j/K. If the values of changeH֯ and…

A: Answer: Given data: ∆H°=-83.5kJ∆H°=-83500kJ ∆S°=-148J/K

Q: The overall reaction: 2 NO (g) + 2 H2 (g) → N2 (g) + 2 H2O (g) was determined by the following…

A: Answer: Rate law for the given reaction is: r=k[NO]α[H2]β Here: r=rate of reactionk=rate constant α…

Q: 9 From the fóllowing enthalpy changes, calculate the value of AHº for the reaction H2(g) + H2…

A: We have to add or  subtract the given equations in a such a way that we get the desired equation.

Q: If 0.0068 mol/L solution of Pb(NO,), was mixed with 8.15 x 10 mol/L solution of K PO., would a…

A: Given:  Molarity of Pb(NO3)2 = 0.0068 mol/L = 0.0068 M Molarity of K3PO4 = 8.15 x 10-4 mol/L = 8.15…

Q: The instrument response for student sample was 75, calculate the concentration of potassium ions in…

A: The equation of the curve is y = 1.9943x + 0.8095 where y is the instrument response and x is…

Q: a. H. CH3 CH H. d. b. O O O C

A: The lesser the value of pKa, the higher the value of Ka and stronger is the acid.

Q: Shania looks for the conjugate acid-base pairs. Which of the following is the conjugate base of…

A: Which of the following is conjugate base of CH3COOH ?

Q: H.W) 1013.25 J of heat energy is supplied to 1mol of NH3 (2) which is initially volume is 4L at…

A:

Q: Calculate the pH of a 0.162 M (CH3)2NH2Br solution. Remember that only the decimal places in a pH…

A: To Calculate pH , we would use dissociation equation of given compound. And use its Ka value to…

Q: What are the structures of the products for the reaction of propanal with: 1. Hydroxylamine 2.…

A: Detail mechanistic pathway is given below to find out the product

Q: 3. 3. Some CO, is removed from the equilibrium system shown below. Which of the following statements…

A:

Q: The following picture illustrates the molecular structure of prapanal (A) and propanone (B). Н—С—с—…

A: The correct answer is given below

Q: Write the expression for the equilibrium constant K, for the following reaction. Enclose pressures…

A: