Chemistry concepts and calculations
117302 questions • Page 2022 / 2347
Which of the following characterizes an alpha ray? Choose all that apply. is att
Which of the following characterizes an alpha ray? Choose all that apply. is attracted to the negatively charged plate in an electric field is more penetrating than a gamma ray is…
Which of the following characterizes the reactions of aldehydes and icetnes? nuc
Which of the following characterizes the reactions of aldehydes and icetnes? nucleophilic addition; free radical addition electrophilic substitution nucleophillc acyl substitution…
Which of the following chemical equations refers to the second ionization of A1?
Which of the following chemical equations refers to the second ionization of A1? a. Al(s) + 2e^- rightarrow Al^2-(s) b. Al'(g) rightarrow A1^2+(g) + e^- c. Al(g) rightarrow AF(g) …
Which of the following chemical equations refers to the second ionization of Al?
Which of the following chemical equations refers to the second ionization of Al? a. Al(s) + 2e^- rightarrow Al^2- (s) b. Al^+ (g) righrarrow Al^2+ (g) + e^- c. Al(g) rightarrow Al…
Which of the following chemical reactions is an oxidation-reduction reaction. Zn
Which of the following chemical reactions is an oxidation-reduction reaction. Zn + S rightarrow ZnS H_2S0_4 + 2 NaOH rightarrow Na_2S0_4 + 2H_20 C0_2 + H_20 rightarrow H_2C0_3 AgN…
Which of the following chemicals would have the highest boiling point? CH_3CH_2C
Which of the following chemicals would have the highest boiling point? CH_3CH_2CH_2CI CH_3CH_2CH_2NH_2 CH_3CH_2CH_3 all of these would have the same boiling point ? If the pressur…
Which of the following choices can function as a bidentate ligand? a. PH_3 b. CI
Which of the following choices can function as a bidentate ligand? a. PH_3 b. CI^- c. CN^- d. -OCH_2CH_2O^- e. CO The best name for K_a[FeCI_2(CN)_4] is a. tetrapotassium dichloro…
Which of the following choices describes the most likely product and mechanism o
Which of the following choices describes the most likely product and mechanism of the following reaction conditions? which of the frllawing choines descr bs the mast like!ly produ…
Which of the following choices is the correct mechanism for the Williamson ether
Which of the following choices is the correct mechanism for the Williamson ether synthesis of ethyl isopropyl ether? 28. A) B) C) Na" :H D) E) 29. Which of the following statement…
Which of the following classes of organic compounds is formed by the dehydration
Which of the following classes of organic compounds is formed by the dehydration of alcohols? a. Amines b. Esters c. Aldehydes d. Ketones e. Alkenes The IUPAC name for (CH3)3COH i…
Which of the following clusters of orbitals would form the shape shown here (Fig
Which of the following clusters of orbitals would form the shape shown here (Figure 2) either through the formation of a single molecule or by bonding to another atom of similar e…
Which of the following clusters of orbitals would form the shape shown here (Fig
Which of the following clusters of orbitals would form the shape shown here (Figure 2) either through the formation of a single molecule or by bonding to another atom of similar e…
Which of the following clusters of orbitals would form the shape shown here (Fig
Which of the following clusters of orbitals would form the shape shown here (Figure 3) either through the formation of a single molecule or by bonding to another atom of similar e…
Which of the following clusters of orbitals would form the shape shown here (Fig
Which of the following clusters of orbitals would form the shape shown here (Figure 3) either through the formation of a single molecule or by bonding to another atom of similar e…
Which of the following clusters of orbitals would form the shape shown here (Fig
Which of the following clusters of orbitals would form the shape shown here (Figure 2) either through the formation of a single molecule or by bonding to another atom of similar e…
Which of the following clusters of orbitals would form the shape shown here (Fig
Which of the following clusters of orbitals would form the shape shown here (Figure 2) either through the formation of a single molecule or by bonding to another atom of similar e…
Which of the following clusters of orbitals would form the shape shown here (Fig
Which of the following clusters of orbitals would form the shape shown here (Figure 3) either through the formation of a single molecule or by bonding to another atom of similar e…
Which of the following clusters of orbitals would form the shape shown here (Fig
Which of the following clusters of orbitals would form the shape shown here (Figure 3) either through the formation of a single molecule or by bonding to another atom of similar e…
Which of the following coenzymes is NOT tightly/covalently bound to the pyruvate
Which of the following coenzymes is NOT tightly/covalently bound to the pyruvate dehydrogenase complex (PDC)? A. FAD B. Lipoic acid C. NAD^+ D. TPP Which of the following statemen…
Which of the following combinations of entropy changes for aprocess are possible
Which of the following combinations of entropy changes for aprocess are possible? A. Ssys < 0, Ssurr <0, Suniv > 0 B. Ssys < 0, Ssurr >0, Suniv < 0 C. Ssys < …
Which of the following combinations of quantum numbers are allowed for an electr
Which of the following combinations of quantum numbers are allowed for an electron in a one-electron atom? Which are not? Identify the atom or ion corresponding to each of the fol…
Which of the following combinations of quantum numbers are allowed? Select all t
Which of the following combinations of quantum numbers are allowed? Select all that apply. n = 5, 1 = 3. mi = 3, ms = -1/2 n = 2,l = 2, mi = 2,ms = +1/2 n = 3, l = 1. mi = -2, ms …
Which of the following combinations of quantum numbers are allowed? Select all t
Which of the following combinations of quantum numbers are allowed? Select all that apply. n = 5, 1 = 3. mi = 3, ms = -1/2 n = 2,l = 2, mi = 2,ms = +1/2 n = 3, l = 1. mi = -2, ms …
Which of the following combinations would be best to buffer an aqueous solution
Which of the following combinations would be best to buffer an aqueous solution at a pH of 7.0? a. H_3PO_4 and H_3PO^-_4 K_a1 = 7.5 times 10^-3 b. HNO_2 and NO^-_2, K_a = 4.5 time…
Which of the following combinations would be the best choice to buffer the pH of
Which of the following combinations would be the best choice to buffer the pH of a solution at approximately 7? lonization Constants for Aqueous Weak Acids at 25 °c Acid Ka (pK.) …
Which of the following combinations would not result in a buffer sobution? ) CH.
Which of the following combinations would not result in a buffer sobution? ) CH.COOH/CH COONs d) HF/KF 2) A buffer solution consists of HF and NaF has pH of 3.17. What would be th…
Which of the following complexes has the largest crystal field splitting of the
Which of the following complexes has the largest crystal field splitting of the d orbitals? a. COF^3- d. Co(H_2O)_6^3+ b. Co(CN)_6^3- e. Col_6^3- c. CoBr_6^3- 5. How many unpaired…
Which of the following components is bonded to the backbone chain of DNA by N-gl
Which of the following components is bonded to the backbone chain of DNA by N-glycosidic bonds? a. phosphoryl groups b. nucleotides c. pentoses d. nitrogenous bases e. riboses Whi…
Which of the following components is bonded to the backbone chain of DNA by N-gl
Which of the following components is bonded to the backbone chain of DNA by N-glycosidic bonds? a. phosphoryl groups b. nucleotides c. pentoses d. nitrogenous bases e. riboses Whi…
Which of the following compound cannot be a Bronsted-Lowry base? OH^- H_2O NH_3
Which of the following compound cannot be a Bronsted-Lowry base? OH^- H_2O NH_3 NH^+_4 SH^- Suppose 0.50 L of a HNO_3 solution has a pH of 3.30. How many moles of HNO_3 must have …
Which of the following compounds are likely to form electrolyte solutions (assum
Which of the following compounds are likely to form electrolyte solutions (assume all dissolve) in water? Choose all that are correct 1. HNO3 2. MgCl2 3. Methanol, CH4O 4. Sugar, …
Which of the following compounds cannot react as a diene in a Diels - Alder reac
Which of the following compounds cannot react as a diene in a Diels - Alder reaction? A) B) C) D) Which one of the following is not readily oxidized by K_2 Cr_2 O? in H_2 SO_6/H_2…
Which of the following compounds does not form ions when dissolved in water? [Co
Which of the following compounds does not form ions when dissolved in water? [Co(NH3)6]Cl3 [Co(NH3)3Cl3] [Co(NH3)5Cl]Cl2 [Co(NH3)4Cl2]Cl none of these A compound has the empirical…
Which of the following compounds does not form ions when dissolved in water? [Co
Which of the following compounds does not form ions when dissolved in water? [Co(NH3)6]Cl3 [Co(NH3)3Cl3] [Co(NH3)5Cl]Cl2 [Co(NH3)4Cl2]Cl none of these A compound has the empirical…
Which of the following compounds gives a 1H NMR spectrum consisting of only a si
Which of the following compounds gives a 1H NMR spectrum consisting of only a singlet? a) 1-bromopropane b) 2,2-dibromopropane c) 1,1-dibromopropane d) 1,3-dibromopropane Which of…
Which of the following compounds gives a 1H NMR spectrum consisting of only a si
Which of the following compounds gives a 1H NMR spectrum consisting of only a singlet? a) 1-bromopropane b) 2,2-dibromopropane c) 1,1-dibromopropane d) 1,3-dibromopropane Which of…
Which of the following compounds has an extremely disagreeable odor? a. CH_3CH_2
Which of the following compounds has an extremely disagreeable odor? a. CH_3CH_2OH b. CH_3CH_2 OCH_2CH_3 c. CH_3CH_2SH d. all of these e. none of these Which structural feature is…
Which of the following compounds has the HIGHEST boiling point? Identity the rea
Which of the following compounds has the HIGHEST boiling point? Identity the reagent (s) that can accomplish the reaction below Which of the following is the LEAST soluble in wate…
Which of the following compounds has the highest boiling point? What is the prod
Which of the following compounds has the highest boiling point? What is the product of the following reaction? -CN is -C = N: What is the first step in the nucleophile-induced (ba…
Which of the following compounds has the highest solubility in hexane? (A) Pheno
Which of the following compounds has the highest solubility in hexane? (A) Phenol (B) ethan-1, 2-diol (C) diethyl ether (D) methanamine (E) diethylamine Which of following compoun…
Which of the following compounds has the lamest lattice enthalpy? In he Lews str
Which of the following compounds has the lamest lattice enthalpy? In he Lews structure of SeF_3 the central atom has 1 one pair and 3 bonding pairs of electrons 2 lone 3 handing p…
Which of the following compounds have the same degree of Which of the following
Which of the following compounds have the same degree of Which of the following is true about the change of the signal in a^1H NMR spectrum? Which of the following is true about t…
Which of the following compounds in the major product of the following reaction
Which of the following compounds in the major product of the following reaction sequence Acetic acid Propanoic acid 2 - Pentanone 3 - Pentanone Ethanol According to the following …
Which of the following compounds is (are) symmetrical ethers? A) Only I B) Only
Which of the following compounds is (are) symmetrical ethers? A) Only I B) Only IV C) only III and IV D) Only I, III and IV Which of the following explains why epoxides are much m…
Which of the following compounds is a Bronsted-Lowry base? H_3PO_4 NH_4^+ HCl HP
Which of the following compounds is a Bronsted-Lowry base? H_3PO_4 NH_4^+ HCl HPO_4^2- Which of the following is not a conjugate acid/base pair? HS^- and H_2S HCO_3^-/CO_3^2- NH_4…
Which of the following compounds is a major contributor of the stench odor that
Which of the following compounds is a major contributor of the stench odor that the Titan Arum plant produces? Methane thiol 3-methylbutanoic acid Trimethylamine Methyl thiolaceta…
Which of the following compounds is a nonelectrolyte? How many grams of potassiu
Which of the following compounds is a nonelectrolyte? How many grams of potassium chloride are in 500mL of a solution which 23.5% (m/V)? Two aqueous solutions (A is 0.2 M Na_2CO_3…
Which of the following compounds is a weak electrolyte? 350 ml. of 0255 M sitric
Which of the following compounds is a weak electrolyte? 350 ml. of 0255 M sitric acid is added to 45.0m concentration of sitrate ion in the final solution? of 0328 M MNO What is t…
Which of the following compounds is an enol of compound X drawn below? A. Compou
Which of the following compounds is an enol of compound X drawn below? A. Compounds A and B are both enols of X. B. A C. Compounds A, B, and C are all enols of X. D. C E. B In sev…
Which of the following compounds is an ether? Which of the following compounds i
Which of the following compounds is an ether? Which of the following compounds is a ketone? Which of the following compounds is an aldehyde? Which of the following compounds has t…
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