Chemistry concepts and calculations

Which of the following two reactions would have an equilibrium constant more fav

Which of the following two reactions would have an equilibrium constant more favorable to the right? Explain your answer Reaction1 CH3 Which of the the given reactions has an equi…

Which of the following type of substance is not a (2pts) DNA O protein triglycer

Which of the following type of substance is not a (2pts) DNA O protein triglyceride What is the term for a chemical signal secreted by an animal to attract a mate? (2pts) O glycop…

Which of the following types of compounds do not contain oxygen? alcohols aldehy

Which of the following types of compounds do not contain oxygen? alcohols aldehydes esters amines ketones Which of these forces holds the two complementary strands of DNA together…

Which of the following types of fats do NOT contain car \' Saturated fats Monoun

Which of the following types of fats do NOT contain car ' Saturated fats Monounsaturated fats Polyunsaturated fats Solid fats a and d only Which of the following are is structured…

Which of the following types of radiation has the lowest energy? gamma rays visi

Which of the following types of radiation has the lowest energy? gamma rays visible ultraviolet infrared radio Which of the following has the longest wavelength? blue light red li…

Which of the following types of reactions proceed through a carbocation intermed

Which of the following types of reactions proceed through a carbocation intermediate? (Circle one) S_N1 S_M2 Neither Both Which of the following types of reactions proceed via a c…

Which of the following types of reactions proceed through an intermediate? (Circ

Which of the following types of reactions proceed through an intermediate? (Circle one) El E2 Neither Both Which of the following types of reactions proceed via a concerted proces…

Which of the following types of transition would require the shortest wavelength

Which of the following types of transition would require the shortest wavelength radiation? Rotational transitions Vibrational transitions Electronic transitions A molecule which …

Which of the following visible colors of light has the wavelength? Blue green vi

Which of the following visible colors of light has the wavelength? Blue green violet yellow red Determine the velocity of a medicine ball (m = 10.0 kg) with a wavelength of 1.33 t…

Which of the following visible lights has the shortest wavelength? A term most o

Which of the following visible lights has the shortest wavelength? A term most often used to describe the radiant energy emitted from the Sun in the visible and near ultra-violet …

Which of the following will NOT result in a greater degree of nitration than the

Which of the following will NOT result in a greater degree of nitration than the reaction conditions we employed? A. Running the reaction at higher temperature B. Letting the reac…

Which of the following will be observed after 10.6 g of lead(II) nitrate and 1.4

Which of the following will be observed after 10.6 g of lead(II) nitrate and 1.47 g of NaCl are added to 2.0 L of water without changing the volume significantly? (Ksp = 1.6 x 10-…

Which of the following will be produced upon adding lithium diisopropylamide, Li

Which of the following will be produced upon adding lithium diisopropylamide, LiN(CH(CH_3)_2)_2, to 1-butyne (CH_3CH_2C=CH)? Select one: a. CH_3CH_2C=C-C=CH_2CH_3 + LiH b. CH_3CH_…

Which of the following will be the daughter of an electroncapture by phosphorus-

Which of the following will be the daughter of an electroncapture by phosphorus-30? a.   phosphorus-31 b.   sulfur-31 c.   sulfur-32 d.   silicon-28 e.   silicon-30 Please explain…

Which of the following will decrease the cell potential for the following reacti

Which of the following will decrease the cell potential for the following reaction: 2Fe3+(aq) + 3Zn(s) 3Zn2+(aq) + 2Fe(s) Use the reaction Ecell = E°cell (RT/nF)lnQ and consider h…

Which of the following will exhibit London dispersion force CH_3OH BF_3 CHCl_3 H

Which of the following will exhibit London dispersion force CH_3OH BF_3 CHCl_3 HBr SO_2 Which of the following has the highest viscosity? CH_3CH_3 CH_2OHCH_2OH CH_3CH_2CH_2 CH_2 C…

Which of the following will generate a cell voltage that is different from the s

Which of the following will generate a cell voltage that is different from the standard voltage for the cell? a cell temperature that is greater or lower than 298 K aqueous cell c…

Which of the following will give a solution with a pH>7, but is not an Arrhenius

Which of the following will give a solution with a pH>7, but is not an Arrhenius base in the strict sense? Which one of the following pairs cannot be mixed together to form a b…

Which of the following will increase reaction rate by increasing the value of th

Which of the following will increase reaction rate by increasing the value of the rate constant, k? Increasing reactant concentration Increasing temperature Increasing the surface…

Which of the following will increase the cell potential for the following reacti

Which of the following will increase the cell potential for the following reaction: 2Fe3+(aq) + 3Zn(s) 3Zn2+(aq) + 2Fe(s) Add solid iron to the system Increase concentration of Fe…

Which of the following will increase the value of the equilibrium constant for t

Which of the following will increase the value of the equilibrium constant for the following reaction? CaCO3(s) ? CaO(s) CO2(g) ?H = 178kJ I know temperature is the only variable …

Which of the following will most effectively resist a change in pH when 5 drops

Which of the following will most effectively resist a change in pH when 5 drops of 0.1 M NaOH are added to it? Which of the following will most effectively resist a change in pH w…

Which of the following will need to be counted when determining the total number

Which of the following will need to be counted when determining the total number of pi electrons in a conjugated system? (choose all that apply)--assume that the pi system is a se…

Which of the following will permanently change the ratio of products to reactant

Which of the following will permanently change the ratio of products to reactants in on equilibrium mixture for a chemical reaction involving gaseous species increasing the temper…

Which of the following will require the greatest energy input to separate the io

Which of the following will require the greatest energy input to separate the ions? a. MgC_2 b. NaCl c. MgBr_2 d. MgI_2 e. MgF_2 Lanterns and stoves that use n-pentane as a fuel a…

Which of the following will spontaneously reduce Fe^2 under standard conditions?

Which of the following will spontaneously reduce Fe^2 under standard conditions? a) cr^3 b) cr^2+ c) pb^2+ d) pb e) none of the above 2. which of the following is the strongest ox…

Which of the following will undergo chlorination most rapidly using Cl2, FeCl3?

Which of the following will undergo chlorination most rapidly using Cl2, FeCl3? Toluene Nitrobenzene o-nitroacetophenone p-nitrobenzoic acid Which molecule is antiaromatic? The ni…

Which of the following would AgBr have the greatest solubility? a.) 0.10 LiBr b.

Which of the following would AgBr have the greatest solubility? a.) 0.10 LiBr b.)0.10 M AgNO3 c.) 0.20 M NaBr d.) water Calculate the pH of a 2.0x^-3 M solution HClO4 a.) 2.0 b.) …

Which of the following would NOT act as a buffer solution? A) A solution formed

Which of the following would NOT act as a buffer solution? A) A solution formed by adding 0.10 mol of acetic acid and and 0.10 mol of sodium acetate to 1.00 L of water B) A soluti…

Which of the following would allow you to distinguish the two compounds shown (1

Which of the following would allow you to distinguish the two compounds shown (1 and 2), if you were given the 1H NMR spectrum for each? There are TWO possible correct answers- pi…

Which of the following would be appropriate conjugate acid/base systems for a bu

Which of the following would be appropriate conjugate acid/base systems for a buffer? NH_3/NH_4^-. HC_2H_3O_2/NaC_2H_3O_2 HCl/NaOH What is chemical equilibrium? What are chemical …

Which of the following would be classified as a pure substance(s)? a) elements b

Which of the following would be classified as a pure substance(s)? a) elements b) compounds c) pure water d) carbon dioxide e) all of these Aqueous solutions of ammonium phosphate…

Which of the following would be the correct overall or net reaction for the reac

Which of the following would be the correct overall or net reaction for the reactions of the CAC that have 4-C compounds as reactants? (Here a 4-C compound could include a 4-C int…

Which of the following would be the result of increasing the temperature at whic

Which of the following would be the result of increasing the temperature at which GC is run? I knew this would cause a faster elution time because temperature increases kinetic en…

Which of the following would contribute to tertiary structure? charge-charge int

Which of the following would contribute to tertiary structure? charge-charge interaction between lysine and aspartic acid hydrophobic interaction between leucine and valine disulf…

Which of the following would decrease the K_sp for PbI_2? Adding a solution of P

Which of the following would decrease the K_sp for PbI_2? Adding a solution of Pb(NO_3)_2 Adding a solution of KI Lowering the pH of the solution None of the above-the K_sp of a c…

Which of the following would have a positive value for Delta S? 2 H_2O(g) righta

Which of the following would have a positive value for Delta S? 2 H_2O(g) rightarrow 2 H_2(g) + O_2(g) N_2(g) + 3 H_2(g) rightarrow 2 NH_3(g) CO_2(g) + H_2(g) rightarrow CO(g) + H…

Which of the following would likely dissolve in water? Cl_2CCCl_2 C_6H_6, benzen

Which of the following would likely dissolve in water? Cl_2CCCl_2 C_6H_6, benzene Ca(HCO_3)_2 Cci_4 C_6H_5Cl Which of the following would you expect to be least soluble? Ca(ClO_4)…

Which of the following would make a drug unacceptable as a CYP450 probe? A drug

Which of the following would make a drug unacceptable as a CYP450 probe? A drug that is metabolized slowly by a single CYP450 isozyme. A drug that is metabolized by more than one …

Which of the following would not be a redox reaction? A. the combustion of a hyd

Which of the following would not be a redox reaction? A. the combustion of a hydrocarbon in oxygen gas B. the reaction that occurs when aqueous calcium chloride is mixed with aque…

Which of the following would not be a redox reaction? A. the combustion of a hyd

Which of the following would not be a redox reaction? A. the combustion of a hydrocarbon in oxygen gas B. the reaction that occurs when aqueous calcium chloride is mixed with aque…

Which of the following would not be a redox reaction? A. the reaction between ir

Which of the following would not be a redox reaction? A. the reaction between iron metal and sulfur to form iron(II) sulfide B. the reaction between zinc metal and aqueous hydroch…

Which of the following would not be a redox reaction? A. the reaction between ir

Which of the following would not be a redox reaction? A. the reaction between iron metal and sulfur to form iron(II) sulfide B. the reaction between zinc metal and aqueous hydroch…

Which of the following would produce a buffer solution when dissolved in 250 mL

Which of the following would produce a buffer solution when dissolved in 250 mL ot water? HCN and NaF HBr and KOH HNO_2 and KNO_2 HCl and NaCl None of the above mixtures will make…

Which of the following would produce a buffer solution when dissolved in 500 mI,

Which of the following would produce a buffer solution when dissolved in 500 mI, of water HCN and NaF HCNO_2 and KNO_2 HBr and NaOH HCl and KCI None of the above mixtures will mak…

Which of the following would release the most heat? Assume the same mass of in e

Which of the following would release the most heat? Assume the same mass of in each case. Specific heats of ice, liquid water, and water vapor are 2.05 J/(g°C), 4.18 J/(g°C), and …

Which of the following would release the most heat? Assume the same mass of in e

Which of the following would release the most heat? Assume the same mass of in each case. Specific heats of ice, liquid water, and water vapor are 2.05 J/(g°C), 4.18 J/(g°C), and …

Which of the following would show the longest wavelength in its UV spectrum? Exp

Which of the following would show the longest wavelength in its UV spectrum? Explain I know that: 1. B 2. B? 3. C 4 and 5 ? UVSPECTROSCOPY 1. When an organic molecule is irradiate…

Which of the following would you expect to be elastomers and which thermosetting

Which of the following would you expect to be elastomers and which thermosetting polymers at room temperature? Justify each choice. Epoxy having a network structure Lightly crossl…

Which of the following would you expect to be elastomers and which thermosetting

Which of the following would you expect to be elastomers and which thermosetting polymers at room temperature? Justify each choice. Epoxy having a network structure Lightly crossl…