Chemistry concepts and calculations

1. Compound A is three times more soluble in diethyl ether than in water, so its

1. Compound A is three times more soluble in diethyl ether than in water, so its partition coefficient is K = 3, for partitioning of compound A between diethyl ether and water. Fo…

1. Compound Y with a partition coefficient of 0.4 (K) between solvents A and B (

1. Compound Y with a partition coefficient of 0.4 (K) between solvents A and B (as shown in the formula below) is dissolved in 100 mL of A. Which will be more effective for extrac…

1. Concentration and amount. Which of the following is a unit of amount? Select

1. Concentration and amount. Which of the following is a unit of amount? Select either yes (Y) or no (N). Please don't highlightyour choice (highlighter alignment doesn'tsurvive t…

1. Conductivity depends on: a. The number of mobile charge carriers per unit vol

1. Conductivity depends on: a. The number of mobile charge carriers per unit volume (N with units of m-3 )2 b. Charge per carrier, q (units of C) c. The mobility of the charge,, w…

1. Consider a balloon filled with helium at the following conditions. 313 g He 1

1. Consider a balloon filled with helium at the following conditions. 313 g He 1.00 atm 1910. L Molar Heat Capacity = 20.8J/°C. mol The temperature of this balloon is decreased by…

1. Consider a case where you are evaporating aluminum (Al) on a silicon wafer in

1. Consider a case where you are evaporating aluminum (Al) on a silicon wafer in the cleanroom. (a) The first treatm t thing you will do is to clean the wafer. Your cleaning proce…

1. Consider a case where you are evaporating aluminum (Al) on a silicon wafer in

1. Consider a case where you are evaporating aluminum (Al) on a silicon wafer in the cleanroom. (a) The first treatm t thing you will do is to clean the wafer. Your cleaning proce…

1. Consider a chromatogram containing a single analyte with retention time of 4

1. Consider a chromatogram containing a single analyte with retention time of 4 minutes. The mobile phase elution time is 0.2 minutes. What is the capacity factor (k') for the ana…

1. Consider a galvanic cell consisting of the following two redox couples: Ag +

1. Consider a galvanic cell consisting of the following two redox couples:                         Ag+(0.010M) + e- --> Ag(s)    E0 = +0.80 V          Cr3+(0.010M) + e- --> …

1. Consider a mixture of three peptides. The three peptides have the following p

1. Consider a mixture of three peptides. The three peptides have the following primary structure: A) asp-asp-val B) glu-asp-glu C) val-val-lys Determine the net charge of each pep…

1. Consider a saturated solution of CaCl 2 . What will happen if more calcium io

1. Consider a saturated solution of CaCl2. What will happen if more calcium ion is added to the mixture? ___The reaction will spontaneously start producing solid calcium chloride.…

1. Consider an algorithm called AbsurdSort . This algorithm will bring all the d

1. Consider an algorithm called AbsurdSort. This algorithm will bring all the data to be sorted into a large array in main memory. Then the array will randomly rearranged, and the…

1. Consider an neon atom confined to a one-dimensional box of length 1.50 angstr

1. Consider an neon atom confined to a one-dimensional box of length 1.50 angstroms. What is the energy difference for this atom, in Joules, between the n=9 and n=8 energy levels?…

1. Consider each of the following solvent pairs and determine if the pair would

1. Consider each of the following solvent pairs and determine if the pair would be a good crystallization solvent mixture. Explain why or why not. (a) water-hexane (b) water-metha…

1. Consider the balanced ionic equation for the reaction in today\'s exercise: 5

1. Consider the balanced ionic equation for the reaction in today's exercise: 5C,042, + 16 H + + 2MnO4 10CO2 + 2Mn2+ + 8H20 The MnO4 salt used is KMn0, the oxalate salt is Na C04 …

1. Consider the balanced reaction: (note: D = delta symbol) 2ClF 3 (g) -> Cl 2 (

1.       Consider the balanced reaction:  (note:  D = delta symbol) 2ClF3(g) -> Cl2(g) + 3 F2(g) Complete the following Table:             D[ClF3]/Dt                           …

1. Consider the behavior of the chemical hexamethyldeath (HMD) in a lake. The la

1. Consider the behavior of the chemical hexamethyldeath (HMD) in a lake. The lake has a constant volume of 108 L, and it has one outflow and two inputs: • a factory waste: flow =…

1. Consider the behavior of the chemical hexamethyldeath (HMD) in a lake. The la

1. Consider the behavior of the chemical hexamethyldeath (HMD) in a lake. The lake has a constant volume of 10^8 L, and it has one outflow and two inputs: • a factory waste: flow …

1. Consider the cell represented by this diagram: What is the emf (E cell) for t

1. Consider the cell represented by this diagram: What is the emf (E cell) for the reaction as written at 298K? Pb(s) / Pb2+(2.0M) // Ag+(0.0040M) / Ag(s) Must show work! a. What …

1. Consider the cell represented by this diagram: What is the emf (E cell) for t

1. Consider the cell represented by this diagram: What is the emf (E cell) for the reaction as written at 298K? Pb(s) / Pb2+(2.0M) // Ag+(0.0040M) / Ag(s) Must show work! a. What …

1. Consider the cell represented by this diagram: What is the emf (E cell) for t

1. Consider the cell represented by this diagram: What is the emf (E cell) for the reaction as written at 298K? Pb(s) / Pb2+(2.0M) // Ag+(0.0040M) / Ag(s) Must show work! a. What …

1. Consider the cell: Zn/Zn 2+ (1.00M) // Ag + (0.860 M) / Ag Calculate the init

1. Consider the cell: Zn/Zn 2+ (1.00M) // Ag + (0.860 M) / Ag Calculate the initial cell potential. Hint: This is not at standard conditions 2. Consider the cell: Zn/Zn 2+ (1.00M)…

1. Consider the circuit in the drawing. ( R 1 = 2.0 , R 2 = 30 , V 1 = 35.0 V.)

1. Consider the circuit in the drawing. (R1 = 2.0 , R2 = 30 , V1 = 35.0 V.) (a) Determine the magnitude of the current in the circuit. (b) Determine the magnitude of the voltage b…

1. Consider the dissolution of an ionic salt in water. Which of the following st

1. Consider the dissolution of an ionic salt in water. Which of the following statements best explains why this process is considered a physical change? (A) The ionic salt can be …

1. Consider the effect of adding 1.0 mL of 1.0 M NaOH to 1.0 L of water. What is

1. Consider the effect of adding 1.0 mL of 1.0 M NaOH to 1.0 L of water. What is the pH of this solution before and after addition of base? 2. Consider the effect of adding 1.0 mL…

1. Consider the effect of adding 1.0 mL of 1.0 M NaOH to 1.0 L of water. What is

1. Consider the effect of adding 1.0 mL of 1.0 M NaOH to 1.0 L of water. What is the pH of this solution before and after addition of base? 2. Consider the effect of adding 1.0 mL…

1. Consider the equation: KClO3>>>>KCl + 3/2O2 Assign oxidation states to each e

1. Consider the equation: KClO3>>>>KCl + 3/2O2 Assign oxidation states to each element on each side of the equation. Reactants: ___K ___Cl ___O  and Products: ___K ___…

1. Consider the equilibrium 2 SO 2 (g) + O 2 (g) --> 2 SO 3 (g) with ?H = -198.2

1. Consider the equilibrium 2 SO2(g) + O2(g) --> 2 SO3(g) with ?H = -198.2 kJ/mol. In which direction would the equilibrium shift if there were an increase in temperature? Ques…

1. Consider the exothermic reaction: C (s) + O2 (g) CO2 (g) state in which d

1. Consider the exothermic reaction: C (s) + O2 (g) <=> CO2 (g) state in which direction the equilibrium will shift when each of the following happens : A. Increase in T B. …

1. Consider the following 3 × 4 matrix and define it in MATLAB Using appropriate

1. Consider the following 3 × 4 matrix and define it in MATLAB Using appropriate MATLAB functions do the following, each with a single MATLAB command: a. Determine the minima of t…

1. Consider the following at 25 o C. SHOW ALL STEPS IN WORK a. Complete and bala

1. Consider the following at 25o C. SHOW ALL STEPS IN WORK a. Complete and balance: CaO(s) + HNO3(aq) b. Calculate change in Ho for the reaction in part a. c. Calculate change in …

1. Consider the following at 25 o C. SHOW ALL STEPS IN WORK a. Complete and bala

1. Consider the following at 25o C. SHOW ALL STEPS IN WORK a. Complete and balance: CaO(s) + HNO3(aq) b. Calculate change in Ho for the reaction in part a. c. Calculate change in …

1. Consider the following chemical reaction which is first order with respect to

1. Consider the following chemical reaction which is first order with respect to H and second order with respect to NO: 2NO(g) + 2H(g) Ng) + 2H2O(g) (a) What is the rate law for t…

1. Consider the following chemical reaction: HCl(aq) + NaOH(aq) ? H2O(l) + NaCl(

1. Consider the following chemical reaction: HCl(aq) + NaOH(aq) ? H2O(l) + NaCl(aq) Calculate the moles of NaOH (aq) required to neutralize 22.51 mL of 0.100 M HCl (aq). 2- HBr(aq…

1. Consider the following compounds: ethanol, CH 3 CH 2 OH; dimethyl ether, CH 3

1. Consider the following compounds: ethanol, CH3CH2OH; dimethyl ether, CH3OCH3; and propane, CH3CH2CH3. The boiling points are -42.10C, -230C, and 78.50C. Match the boiling point…

1. Consider the following data from a Heat of Vaporization experiment: ( the vol

1.         Consider the following data from a Heat of Vaporization experiment: (the volume correction factor has not been applied – this is the raw data) Temp              Volume …

1. Consider the following equilibrium: AgCl(s) Ag+ (aq) + Cl- (aq) ?Ho > 0 In wh

1. Consider the following equilibrium: AgCl(s) Ag+ (aq) + Cl- (aq) ?Ho > 0 In which direction will the equilibrium shift if a. HCl is added? Why? b. AgNO3 is added? Why? c. Na2…

1. Consider the following equilibrium: C (s) + 2H 2(g) ? CH 4(g) + 74 kJ When a

1. Consider the following equilibrium: C(s) + 2H2(g) ? CH4(g) + 74 kJ             When a small amount of solid C is added to the system             A. [H2] decreases             B…

1. Consider the following equilibrium: CuCO 3 ( s ) Cu 2+ ( aq ) + CO 3 2-

1.    Consider the following equilibrium: CuCO3 (s) <---> Cu2+(aq)   +   CO32-(aq); ?H >0                     In what direction (left, right, or no change) will the equil…

1. Consider the following equilibrium: H 2 O (g) + CO (g) H 2(g) + CO 2(g) A clo

1. Consider the following equilibrium: H2O(g)  +  CO(g)       H2(g) +  CO2(g) A closed container is initially filled with H2O and CO. As the reaction proceeds towards equilibrium …

1. Consider the following generic reaction: 2A + B + C -> 2D +3E From the follow

1. Consider the following generic reaction: 2A + B + C -> 2D +3E From the following initial rate determinations, write the rate law for the reaction, determine the overall orde…

1. Consider the following half-cell redox reaction involving NO3^- at a concentr

1. Consider the following half-cell redox reaction involving NO3^- at a concentration of 10^-5M (mol/L) and ammonium at a concentration of 10^-3 M in groundwater with a pH of 8. W…

1. Consider the following pairs of functions f(n), g(n). For which pair the func

1. Consider the following pairs of functions f(n), g(n). For which pair the functions are such that f(n) is O (g(n) and g(ra) is O(f(n))? (A) f(n) m2, g(n) n log(n2) (B) f (n) log…

1. Consider the following reaction at equilibrium: 2CO 2 (g) ⇄ 2CO (g) + O 2 (

1. Consider the following reaction at equilibrium: 2CO2 (g) ⇄ 2CO (g) + O2 (g) ΔH ° = −514 kJ Le Chatelier's principle predicts that an increase in temperature will _________…

1. Consider the following reaction at equilibrium: N2(g) +3H2(g)2NHs(g) AH-92 kJ

1. Consider the following reaction at equilibrium: N2(g) +3H2(g)2NHs(g) AH-92 kJ The yield of ammonia can be maximized by carrying out the reaction at a) A high temperature and hi…

1. Consider the following reaction with energy of activation of + 200kJ: 2A + B

1. Consider the following reaction with energy of activation of + 200kJ: 2A + B --- C + D + 460 kJ. What is the energy of activation of the reverse reaction? 2. Consider the follo…

1. Consider the following reaction: 2H2 + O2 ------> 2H2O deltaH(rxn)= -484 kJ W

1. Consider the following reaction: 2H2 + O2 ------> 2H2O     deltaH(rxn)= -484  kJ Which answer best describes the transfer heat that occurs when 1.70 mol of H2 reacts? a. 823…

1. Consider the following reaction: 2Hg (l) + O2 (g) 2HgO (s) H = -180 kJ a. Is

1. Consider the following reaction: 2Hg (l) + O2 (g) 2HgO (s) H = -180 kJ a. Is the reaction exothermic or endothermic? b. Calculate the quantity of heat produced/required when 50…

1. Consider the following reaction: 4 Na + O2 -> 2 Na2O a.How many moles of O2 a

1. Consider the following reaction: 4 Na + O2 -> 2 Na2O a.How many moles of O2 are needed to react with 6.0 mol Na? b. How many g of O2 are needed to react with 16.5 g Na? c. H…

1. Consider the following reaction: H2 (g) + Cl2 (g) ? 2 HCl (g) You have two fl

1. Consider the following reaction: H2 (g) + Cl2 (g) ? 2 HCl (g) You have two flasks. Flask A IS at equilibrium and has partial pressures of PH2 = 0.958 atm, PCl2 = 0.877 atm and …