Chemistry concepts and calculations

Which of the following is the most stable cation? IV D. IV For the following rea

Which of the following is the most stable cation? IV D. IV For the following reaction step, indicate which pattern of arrow pushing it represents A. proton transfer B. loss of lea…

Which of the following is the pH of a 0.0295 M NaOH solution-? 7.00 12.47 1.53 3

Which of the following is the pH of a 0.0295 M NaOH solution-? 7.00 12.47 1.53 3.39 Times 10^-13 None of the above Which reaction will shift toward products when the volume of the…

Which of the following is the pH of a 0.0295 M NaOH solution? 3.39 times 10^-13

Which of the following is the pH of a 0.0295 M NaOH solution? 3.39 times 10^-13 7.00 12.47 1.53 None of the above A reaction is found to have a change in enthalpy of -8.67 kJ/mol …

Which of the following is the sequence of steps followed by biotin-dependent enz

Which of the following is the sequence of steps followed by biotin-dependent enzymes, as listed below? I. Transfer of the carboxyl group from carboxybiotin to the substrate II. Ac…

Which of the following is the softest Lewis acid? Ag + Ac 3+ Au + As 3+ So far f

Which of the following is the softest Lewis acid? Ag+ Ac3+ Au+ As3+ So far from what i've found "soft" lewis acids have electronegativies around 2.2, they have a low or no charge,…

Which of the following is the strongest base? Hints Which of the following is th

Which of the following is the strongest base? Hints Which of the following is the strongest base? SubmitMy AnswersGive Up Incorrect; Try Again; 5 attempts remaining Part M What is…

Which of the following is the strongest base? What is the direction of equilibri

Which of the following is the strongest base? What is the direction of equilibrium which accetylenes (C_2H_2, reacts with H_2N in an acid base reaction? Which of the following sta…

Which of the following is the strongest nucleophile? MeoH MeSH In an addition re

Which of the following is the strongest nucleophile? MeoH MeSH In an addition reaction to an alkene, the pi bond plays the role of: ucleophile electrophile leaving group A and B B…

Which of the following is the strongest oxidizing agent? MnO_4^-(aq) The gas OF_

Which of the following is the strongest oxidizing agent? MnO_4^-(aq) The gas OF_2 can be produced from the electrolysis 01 an aqueous solution of KF, as shown in the equation belo…

Which of the following is the strongest reducing agent? Sn^2+(aq)+rightarrow Sn(

Which of the following is the strongest reducing agent? Sn^2+(aq)+rightarrow Sn(s) E^degree = -0.14 V Sn^4+(aq)+2cdegree rightarrow Sn^2 + (aq) E^degree = 0.15 V Cr^3+(aq)+3edegre…

Which of the following is the weakest acid? What are the hybridizations of the c

Which of the following is the weakest acid? What are the hybridizations of the carbon atoms numbered 1 and 2 respectively in the 4. Which of the following statements is M true abo…

Which of the following is truc about subatomic particles? a. Neutrons have no ch

Which of the following is truc about subatomic particles? a. Neutrons have no charge and are the lightest subatomic particle b. The mass of a neutron nearly equals the mass of a p…

Which of the following is true about a thermodynamically-controlled reaction? Th

Which of the following is true about a thermodynamically-controlled reaction? The major product is the more stable product The major product is the one that forms in the fewest st…

Which of the following is true about allosteric enyzmes? A) They typically catal

Which of the following is true about allosteric enyzmes? A) They typically catalyze the last reaction in a metabolic pathway since it is the critical step in the synthesis of the …

Which of the following is true about buffers? (Circle all that apply.) a. The co

Which of the following is true about buffers? (Circle all that apply.) a. The concentration of a buffer refers to the number of moles of the acid species per liter of solution. b.…

Which of the following is true about the base peak in mass spectrometry? The bas

Which of the following is true about the base peak in mass spectrometry? The base peak is assigned a relative abundance equal to that of the parent ion. The m/z value equals the m…

Which of the following is true about the cell\'s \"preparation for the cycle\"?

Which of the following is true about the cell's "preparation for the cycle"? A. The reaction catalyzed by the pyruvate dehydrogenase complex is, in part, an oxidation reaction. B.…

Which of the following is true about the light reactions of photosynthesis? PSI

Which of the following is true about the light reactions of photosynthesis? PSI is responsible for oxidation of water and PSII reduces NADP+ PSII is responsible for oxidation of w…

Which of the following is true about the mass number? I. It is the total number

Which of the following is true about the mass number? I. It is the total number or protons and neutrons in the nucleus of a particular isotope of an element. II. It is underneath …

Which of the following is true about the number of signals in a 1 H NMR spectrum

Which of the following is true about the number of signals in a 1H NMR spectrum? 18. How many signals would you expect in the 1H NMR spectrum of the compound shown below? A) 4 B) …

Which of the following is true about the pH of a solution of sulfuric acid? A. I

Which of the following is true about the pH of a solution of sulfuric acid? A. If the solution is dilute, the pH is not able to be calculated. B. If the solution is dilute, the pH…

Which of the following is true about the pH of a solution of sulfuric acid? A. I

Which of the following is true about the pH of a solution of sulfuric acid? A. If the solution is dilute, the pH is not able to be calculated. B. If the solution is dilute, the pH…

Which of the following is true about the pH of a solution of sulfuric acid? If t

Which of the following is true about the pH of a solution of sulfuric acid? If the solution is dilute the pH can not be calculated. If the solution is dilute the pH is completely …

Which of the following is true about the peptide bond. Choose all true statement

Which of the following is true about the peptide bond. Choose all true statements. The peptide bond is polar, the N has a partial negative charge and the C has a partial positive …

Which of the following is true about the photoelectric effect? a) The number of

Which of the following is true about the photoelectric effect? a) The number of electrons emitted increases with intensity of light, regardless of the frequency. b) The number of …

Which of the following is true about the photoelectric effect? a) The number of

Which of the following is true about the photoelectric effect? a) The number of electrons emitted increases with intensity of light, regardless of the frequency. b) The number of …

Which of the following is true about the properties of aqueous solutions? A pH c

Which of the following is true about the properties of aqueous solutions? A pH change from 5.0 to 6.0 reflects an increase in hydroxide ion concentration ([OH^-]) of 20% A pH chan…

Which of the following is true about the surface of silica gel used for chromato

Which of the following is true about the surface of silica gel used for chromatographic separations? It is non-polar It is strongly acidic It is polar It is strongly basic Which o…

Which of the following is true about the surface of silica gel used for chromato

Which of the following is true about the surface of silica gel used for chromatographic separations? It is non-polar b. It is strongly acidic It is polar d. It is strongly basic W…

Which of the following is true about zwitterions? They are positively charged. T

Which of the following is true about zwitterions? They are positively charged. They are negatively charged. They are electrically neutral. The charge depends on the zwitterion. Wh…

Which of the following is true before a reaction reaches chemical equilibrium? Q

Which of the following is true before a reaction reaches chemical equilibrium? Question 20 options: The rate of the forward reaction is decreasing, and the rate of the reverse rea…

Which of the following is true concerning pressure of a real gas compared with t

Which of the following is true concerning pressure of a real gas compared with the pressure predicted by the ideal gas equation a) Real pressure is lower than ideal pressure becau…

Which of the following is true concerning pressure of a real gas compared with t

Which of the following is true concerning pressure of a real gas compared with the pressure predicted by the ideal gas equation a) Real pressure is lower than ideal pressure becau…

Which of the following is true concerning the electropositive atom Al? Aluminum

Which of the following is true concerning the electropositive atom Al? Aluminum will lose one electron to form its most stable ion Al and the radius of Al^+ is less than the radiu…

Which of the following is true delta G = for all solid at 0 degree C. The two fa

Which of the following is true delta G = for all solid at 0 degree C. The two factors that determine if a reaction is spontaneous are temperature and entropy. An endothermic react…

Which of the following is true for a dynamic equilibrium The concentrations of r

Which of the following is true for a dynamic equilibrium The concentrations of ractants and products are equal. The forward and reverse reactions occur at the same rat. The concen…

Which of the following is true for a reaction that has only one reactant A) If t

Which of the following is true for a reaction that has only one reactant A) If the reaction is first order, then t_1/2 will double as the initial concentration of the reactant dou…

Which of the following is true for a system at equilibrium? A) Delta S degree sy

Which of the following is true for a system at equilibrium? A) Delta S degree sys = Delta S degree surr B) Delta S degree sys = - Delta S degree surr C) Delta S degree sys = Delta…

Which of the following is true for a system whose equilibrium constant is relati

Which of the following is true for a system whose equilibrium constant is relatively small? A. It will take a long time to reach equilibrium B. The equilibrium lies to the left C.…

Which of the following is true for an equilibrium system? a. in an equilibrium s

Which of the following is true for an equilibrium system? a. in an equilibrium system, molecules that are higher in energy occur less often b. if there are more product molecules …

Which of the following is true for reactions A, B, and C: CH_3CH_2CH_3 plus Br B

Which of the following is true for reactions A, B, and C: CH_3CH_2CH_3 plus Br Bullet rightarrow CH_3C H_2C H_2 Bullet + HBr CH_3C H_2C H_3 plus Br Bullet rightarrow CH_3CH Bullet…

Which of the following is true for the sublimation of a solid substance? Under s

Which of the following is true for the sublimation of a solid substance? Under standard-state conditions, which of the following species is the best reducing agent Rank the follow…

Which of the following is true in regards to k_cat? K_cat can be determined only

Which of the following is true in regards to k_cat? K_cat can be determined only if the concentration of enzyme [E] is known K_cat referred to as the turnover number. According to…

Which of the following is true in regards to k_cat? K_cat can be determined only

Which of the following is true in regards to k_cat? K_cat can be determined only if the concentration of enzyme [E] is known K_cat referred to as the turnover number. According to…

Which of the following is true of SN1 reactions A) they are stereospecific B) th

Which of the following is true of SN1 reactions A) they are stereospecific B) they occur in a single step C) they are second order D) they proceed through a carboncation intermedi…

Which of the following is true of SN1 reactions? a. They are stereospecific. b.

Which of the following is true of SN1 reactions? a. They are stereospecific. b. They occur in a single step. c. They are second order. d. They proceed through a carbocation interm…

Which of the following is true of an isosbestic point? A The phenomenon occurs m

Which of the following is true of an isosbestic point? A The phenomenon occurs most commonly when two species are converted into one species. B It is a point on an absorption spec…

Which of the following is true of both power and energy? Both power and energy c

Which of the following is true of both power and energy? Both power and energy can be measured in watts (W). Energy is the capacity to do work and can be measured in watt-hours (W…

Which of the following is true of integral membrane proteins? Both the inner and

Which of the following is true of integral membrane proteins? Both the inner and outer surfaces involve primarily hydrophilic groups. Both the inner and outer surfaces involve pri…

Which of the following is true of most fatty acids found in triglycerides? They

Which of the following is true of most fatty acids found in triglycerides? They are unbranched. They contain more than 20 carbon atoms. They contain an odd number of carbon atoms.…