Chemistry concepts and calculations

Which process represents a decrease in entropy? PLEASE CHOOSE FROM THE FOLLOWING

Which process represents a decrease in entropy? PLEASE CHOOSE FROM THE FOLLOWING PART B Part A Which of the following are state functions, and which are not? a) The temperature of…

Which processes in the table have enthalpies of combustion that are also standar

Which processes in the table have enthalpies of combustion that are also standard enthalpies of formation? (Select all that apply.) Hcomb † Molar Enthalpies of Combustion at 25°C …

Which product did you isolate and how pure is it? Can you identify any of the im

Which product did you isolate and how pure is it? Can you identify any of the impurities 100 NKTM hydro, 95 90 85 2 80 75 70- 65 2000 1500 1000 500 4000 3500 3000 2500 Wavenumbers…

Which product is which? (Circle one) 2-methyl-1-butene Zaitsev Hofmann Neither 2

Which product is which? (Circle one) 2-methyl-1-butene Zaitsev Hofmann Neither 2-methyh2-butene Zaitsev Hofmann Neither True or False: This GC analysis will not require a response…

Which product(s) would be formed in appreciable amount(s) when trans-1-bromo-2-m

Which product(s) would be formed in appreciable amount(s) when trans-1-bromo-2-methylcyclohexane undergoes dehydrohalogenation upon treatment with sodium ethoxide in ethanol? more…

Which proton(s) in the final product (1-Phenylethanol) corresponds to the double

Which proton(s) in the final product (1-Phenylethanol) corresponds to the doublet at approximately 1.5 ppm in the 1H NMR? a. Methyl protons b. Methine proton c. Hydroxyl proton d.…

Which proton(s) in the final product corresponds to the tall singlet at about 7.

Which proton(s) in the final product corresponds to the tall singlet at about 7.40 ppm in the 1H NMR?                                a.            Methyl protons                  …

Which pure compound would have the higher boiling point? Explain you answer full

Which pure compound would have the higher boiling point? Explain you answer fully comparing the types of IMF that these compounds could possibly generate. b) CH_4 or H_2O c) CH_3C…

Which quantum number specifies the energy level of an electron? n 1 mi ms If1 =

Which quantum number specifies the energy level of an electron? n 1 mi ms If1 = 3 for an electron, then what type of orbital is that electron in? s p d f g A radio wave has a freq…

Which rate la corresponds to the proposed mechanism for the decomposition of N2O

Which rate la corresponds to the proposed mechanism for the decomposition of N2O Reaction: 2N2O ->N2+O Mechanism step 1: N2+O(slow) Step 2: N2+O2(fast) A. Rate=k[N2O] B. Rate=k…

Which rate law corresponds to the proposed mechanism for the decomposing of N2O?

Which rate law corresponds to the proposed mechanism for the decomposing of N2O? Rate - k[N2O] Rate - k[N2O]2 Rate - k[N2O][O] Rate - k[N2o]2[O] The main reason that reaction rate…

Which rate law corresponds to the proposed mechanism for the decomposing of N2O?

Which rate law corresponds to the proposed mechanism for the decomposing of N2O? Rate - k[N2O] Rate - k[N2O]2 Rate - k[N2O][O] Rate - k[N2o]2[O] The main reason that reaction rate…

Which reactant in the following redox reaction undergoes reduction? 2MnO_4^- + 5

Which reactant in the following redox reaction undergoes reduction? 2MnO_4^- + 5H_2C_2O_4 + 6H 2Mn^2+ + 10CO_2 + 8H_2O a) MnO_4^- b) H_2C_2O_4 c) Mn^2+ d) CO_2 Give the line notat…

Which reactant is in excess and how many grams of the reactant will remain after

Which reactant is in excess and how many grams of the reactant will remain after the reaction is complete? When calcium carbonate is added to hydrochloric acid, calcium chloride, …

Which reaction below represents the second ionization of Sr? A) Sr(g) rightarrow

Which reaction below represents the second ionization of Sr? A) Sr(g) rightarrow Sr^+ (g) + e^- B) Sr (g) + e^- rightarrow Sr^2- (g) C) Sr (g) rightarrow Sr^2- (g) + e^- D) Sr^2 (…

Which reaction below represents^232_90 Th decay by alpha emission?^232_90 Th rig

Which reaction below represents^232_90 Th decay by alpha emission?^232_90 Th rightarrow^4_2 He +^228_88 Ra^232_90 Th rightarrow^2_4 He +^230_86 Ra^232_90 Th rightarrow^1_1p +^231_…

Which reaction below should have deltaS 0 > 0? H + (aq) + F - (aq) ------> HF (a

Which reaction below should have deltaS0 > 0? H+ (aq)    +    F- (aq)    ------>      HF (aq) 2NO2 (g)       ------->       N2O4 (g) 2Hg (l)     +      O2 (g)     -----&g…

Which reaction below should have deltaSdegree > 0? 2H2(g) + 02(g) rightarrow 2H2

Which reaction below should have deltaSdegree > 0? 2H2(g) + 02(g) rightarrow 2H2O(g) 2N02(g) rightarrow N2O4(g) H+ (aq) + F(aq) rightarrow HF(aq) Baf_2 (s) rightarrow Ba2 + (aq…

Which reaction coordinate diagram below illustrate the fastest exothermic reacti

Which reaction coordinate diagram below illustrate the fastest exothermic reaction? a) b) c) d) 1. Reaction coordinate diagram a 2. Reaction coordinate diagram b 3. Reaction coord…

Which reaction has a DeltaSdegree > 0? 2H2(g) + O2(g) rightarrow 2H2O(g) Ag^+(aq

Which reaction has a DeltaSdegree > 0? 2H2(g) + O2(g) rightarrow 2H2O(g) Ag^+(aq) + Cl^-(aq) rightarrow AgCl(s) 2NH3(g) rightarrow 3H2(g) + N2(g) 2H2(g) + O2(g) rightarrow 2H2O…

Which reaction has a positive change in entropy? Reaction 1 Reaction 2 Reaction

Which reaction has a positive change in entropy? Reaction 1 Reaction 2 Reaction 3 All 3 Reactions What is the change in entropy of the surroundings, delta for Rea S_sarr degree, f…

Which reaction has the highest potential under standard conditions? (A) Pb(s) +

Which reaction has the highest potential under standard conditions? (A) Pb(s) + Br_2 (aq) rightarrow products (B) Sn^4+ (aq) + Pb(s) rightarrow products (C) Br^- (aq) + Sn^4+ (aq)…

Which reaction in the following pair will take place more rapildy? (CH3)3CBr (H2

Which reaction in the following pair will take place more rapildy? (CH3)3CBr (H20) --> (CH3)3COH + HBr OR (CH3)3CBr (CH3CH2OH) --> (CH3)3COCH2CH3 + HBr

Which reaction in the following pair will take place more rapildy? (CH3)3CBr (H2

Which reaction in the following pair will take place more rapildy? (CH3)3CBr (H20) --> (CH3)3COH + HBr OR (CH3)3CBr (CH3CH2OH) --> (CH3)3COCH2CH3 + HBr

Which reaction is an oxidation? RCHO rightarrow RCO_2H RCH_2OH rightarrow RCHO R

Which reaction is an oxidation? RCHO rightarrow RCO_2H RCH_2OH rightarrow RCHO RCH_2OH rightarrow RCO_2H none of these all of these which of the reagents listed below would effici…

Which reaction is faster and why? because F is a better leaving group that I bec

Which reaction is faster and why? because F is a better leaving group that I because I is a better leaving group that F because F stabilizes the reactant better than 1 because I s…

Which reaction of alkene would give the alcohol as its product? a) Acid-cat. hyd

Which reaction of alkene would give the alcohol as its product? a) Acid-cat. hydration c) Bromination b) Alkoxymercuration-demercuration d) Free radical reaction with HBr 7. Which…

Which reaction pathway has the larger rate constant. Which pathway has acetone a

Which reaction pathway has the larger rate constant. Which pathway has acetone added. 2. The rate constant value is inversely related to the activation energy of a reaction (A fas…

Which reaction produces a decrease in the entropy of the system? A) CaCO3 (s) Ca

Which reaction produces a decrease in the entropy of the system? A) CaCO3 (s) CaO (s) + CO2 (g) B) 2C (s) + O2 (g) 2CO (g) C) CO2 (s) CO2 (g) D) 2H2 (g) + O2 (g) 2H2O (l) E) H2O (…

Which reaction produces a decrease in the entropy of the system? My question is,

Which reaction produces a decrease in the entropy of the system? My question is, how do I answer this quickly without having a table of entropies available? Which reaction produce…

Which reaction sequence starting from benzene would result in a high yield of th

Which reaction sequence starting from benzene would result in a high yield of the following product? 1) EtCl, AlCl3 2) H2SO4 (concd) 3) Cl2, FeCl3 4) H2SO4 (dil) 1) H2SO4 (concd) …

Which reaction shows the enthalpy change equal to the second ionization energy o

Which reaction shows the enthalpy change equal to the second ionization energy of nitrogen? Which of the following represents the lattice energy of KCl(s)? Which one of the follow…

Which reaction will not occur? (5 pts.) Al(s) + SnCl2(aq) rightarrow AlCl3(aq) +

Which reaction will not occur? (5 pts.) Al(s) + SnCl2(aq) rightarrow AlCl3(aq) + Sn(s) H2(g) + AgNO3(aq) rightarrow HNO3(aq) + Ag(s) Mg(s) + CuSO4(aq) rightarrow Cu(s) + MgSO4(aq)…

Which reaction will not occur? (5 pts.) Al(s) + SnCl2(aq) rightarrow AlCl3(aq) +

Which reaction will not occur? (5 pts.) Al(s) + SnCl2(aq) rightarrow AlCl3(aq) + Sn(s) H2(g) + AgNO3(aq) rightarrow HNO3(aq) + Ag(s) Mg(s) + CuSO4(aq) rightarrow Cu(s) + MgSO4(aq)…

Which reaction will shift toward products when the volume of the reaction contai

Which reaction will shift toward products when the volume of the reaction container is increased? a. N_2(g) + 3 H_2(g) rightarrow 2 NH_2(g) b. H_2(g) + I_2(g) rightarrow 2 HI(g) c…

Which reactions below would you expect to proceed in the forward direction as wr

Which reactions below would you expect to proceed in the forward direction as written? Recall that the equilibrium for a given reaction will generally prefer the most stable (char…

Which reagent can be used to precipitate Group II cations? After dissolving the

Which reagent can be used to precipitate Group II cations? After dissolving the brown residue in 6M HCl, followed by addition of 0.1M KSCN. A solution with deep red color was obta…

Which reagent, NaOH or NH3, will enable you to precipitate the first-named ion f

Which reagent, NaOH or NH3, will enable you to precipitate the first-named ion from a solution containing each of the following pairs of ions, leaving the second ion in solution? …

Which reagents would you use for the following reaction? H_2S in water H_2S in D

Which reagents would you use for the following reaction? H_2S in water H_2S in DMSO NaSH in water NaSH in DMSO Which reagents would you use for the following reaction? HN_3 in wat…

Which reference to enthalpy changes the terms standard conditions means. p = 1at

Which reference to enthalpy changes the terms standard conditions means. p = 1atm same common temperature usually 298 k. v = 1L The delta E of a system that release 12.4 J of heat…

Which resonance form best explains the increased acidity of p-nitrophenol compar

Which resonance form best explains the increased acidity of p-nitrophenol compared to phenol? 17. 12. What is the major product from the reaction of 2-hexamol with H CrO? c) CI b(…

Which response contains all the statements TRUE of buffer solutions, and NO flas

Which response contains all the statements TRUE of buffer solutions, and NO flase statements. I. A buffer soltuion could consit of equal concentrations of ammonia and ammonium bro…

Which response contains all the statements TRUE of buffer solutions, and NO flas

Which response contains all the statements TRUE of buffer solutions, and NO flase statements. I. A buffer soltuion could consit of equal concentrations of ammonia and ammonium bro…

Which response has both answers correct? Will a precipitate form when 250 mL of

Which response has both answers correct?    Will a precipitate form when 250 mL of 0.33 M Na2CrO4 are added to 250 mL of 0.12 M AgNO3? [Ksp(Ag2CrO4) = 1.1 × 10–12] What is the con…

Which response has both answers correct? Will aprecipitate form when 250mL of .3

Which response has both answers correct? Will aprecipitate form when 250mL of .33 MNa2CrO4 are added to 250mL of .12 MAgNO3? (Ksp(Ag2CrO4) =1.1x10-12). What is the concentration o…

Which response includes all of the molecules listed that have the same molecular

Which response includes all of the molecules listed that have the same molecular electronic geometry, and only those molecules? geometry as BCI3, AsFS, NF3, H2S (a) BCI3, AsFS (b)…

Which salt will form a neutral aqueous solution? NaF Sr(C_2H_3O_2)_2 KBr NH_4Cl

Which salt will form a neutral aqueous solution? NaF Sr(C_2H_3O_2)_2 KBr NH_4Cl What is the pH of an aqueous solution of equal volumes of 0.60 M nitrous acid, HNO_2 and 0.30 M sod…

Which sequence of reaction conditions (in 2- steps) should be used in organic sy

Which sequence of reaction conditions (in 2- steps) should be used in organic synthesis shown below? A) AlCl3/Cl2 ; H2/Pt B) Cl2/U.V light ; H2/Pt C) H2Pt ; AlCl3/Cl2 D) HCl ; H2/…

Which sequence of reactions will make the below transformation in the most effic

Which sequence of reactions will make the below transformation in the most efficient way (major product/s obtained at the first step of the sequence is/are reacting further and th…

Which sequence represents the best synthesis of 4-isopropylbenzonitrile shown ab

Which sequence represents the best synthesis of 4-isopropylbenzonitrile shown above a. 1. Benzene + (CH3)2CHCl, AlCl3 2. Br2, FeBr3 3. KCN b. 1. Benzene + (CH3)2CHCl, AlCl3 2. HNO…