Chemistry concepts and calculations

1. Which compound conforms to the supposed molecular formula of a carbohydrate?

1. Which compound conforms to the supposed molecular formula of a carbohydrate? Interestingly, the answer is used in sunless tanning sprays and lotions. HO a. b. C. d. e. not a.-d…

1. Which compound will be the major product formed in the reaction shown below?

1. Which compound will be the major product formed in the reaction shown below? A) Compound A B) Compound B C) Compound C D) Compound D 2. What will be formed when 1,2-dimethylcyc…

1. Which compound will be the most likely one to give the meta -substituted prod

1. Which compound will be the most likely one to give the meta-substituted product as the major product during electrophilic aromatic nitration? A) phenol B) toluene C) aniline D)…

1. Which compounds can be applied to prepare the corresponding Grignard Reagent?

1. Which compounds can be applied to prepare the corresponding Grignard Reagent? A) CH3CHOHCH2CH2CH2CH2BR B) (CH3)3CHCHBrCH2CH2CO2 C) BrCH=CHCH2CH2CH3 D) CH3NHCH2CH2Br E) none of …

1. Which element has the following electron configuration? (a) [He]2s1 _________

1. Which element has the following electron configuration? (a) [He]2s1 _____________ (b) [Ne]3s23p3_____________ (c) [Ar] 4s23d104p6 _______________ (d) [He]2s22p3 _____________ (…

1. Which element has the following electron configuration? a) [He]2s1 b) [He]2s2

1. Which element has the following electron configuration? a) [He]2s1 b) [He]2s2 2p3 c) [Ne]3s2 3p3 d) [Ar]4s1 3d10 e) [Ar]4s2 3d10 4p6 f) [Ar]4s1 3d5 2. Write the number of core …

1. Which element is most similar to Cl a. Li b. Fe d. H C. e. Cs 2. What is the

1. Which element is most similar to Cl a. Li b. Fe d. H C. e. Cs 2. What is the most likely identity of a metal sample that has a mass of 14.4g and when placed in a graduated cyli…

1. Which enantiomer is formed from attack of a methyl Grignard reagent on the si

1. Which enantiomer is formed from attack of a methyl Grignard reagent on the si face of benzaldehyde 3. What sequence of reactions would best accomplish the following conversion?…

1. Which equation depicts hydrogen phosphate ion behaving as a Bronsted-Lowry ba

1. Which equation depicts hydrogen phosphate ion behaving as a Bronsted-Lowry base in water? a. HPO (a) +H20() PO (aq)+H:O (aq) b. HP042 (aq) + OH (aq)-PO-(aq) + H2O(1) ? HP042-(a…

1. Which force below is the strongest intermolecular attractive force? a. Hydrog

1. Which force below is the strongest intermolecular attractive force? a.   Hydrogen bonding b.   Ion-dipole forces c.   Dipole-dipole forces d.   London dispersion forces 2. Whic…

1. Which force below is the strongest intermolecular attractive force? a. Hydrog

1. Which force below is the strongest intermolecular attractive force? a. Hydrogen bonding b. Ion-dipole forces c. Dipole-dipole forces d. London dispersion forces 2. Which force …

1. Which form of electromagnetic radiation has the longest wavelengths? A) gamma

1. Which form of electromagnetic radiation has the longest wavelengths? A) gamma rays B) microwaves C) radio waves D) infrared radiation E) x-rays 2. Which of the following freque…

1. Which formula is matched with the correct number of valence electrons in the

1. Which formula is matched with the correct number of valence electrons in the free (not bonded) central atom, bonds, and lone pairs in the molecule for the underlined atom?     …

1. Which formula represents a compound different from the other two? Select one:

1. Which formula represents a compound different from the other two? Select one: a. CH3CH2CH2CH3 b. CH3(CH2)2CH3 c. CH3CH(CH3)2 d. No correct answer given 2.The most common geomet…

1. Which gas behaves like an Ideal gas?? a. H2 b.co2 c. ch4(at 0 Celsius) d. ch4

1. Which gas behaves like an Ideal gas?? a. H2 b.co2 c. ch4(at 0 Celsius) d. ch4 (at 200 Celsius) 2. On Earth the Balloon may have a volume of 2.5* 10^4 L at 97.0 kPa and a temper…

1. Which gives a better measure of the ph universal ph paper or a ph meter ? 2 C

1. Which gives a better measure of the ph universal ph paper or a ph meter ? 2 Can distilled water be an effective buffer ? Use data from your experiment to support your answer. 3…

1. Which halogen–C12, Br2, or I2 –is most reactive? How do you conclude this fro

1. Which halogen–C12, Br2, or I2 –is most reactive? How do you conclude this from the below information? 2 Which halogen–C12, Br2, or I2 –is least reactive? How do you conclude th…

1. Which insecticide is more toxic to rats, lead arsenate or Diazinone? 2. In tr

1. Which insecticide is more toxic to rats, lead arsenate or Diazinone? 2. In tritium or carbon dating, as the object become older than the present-day object, does its radioactiv…

1. Which intermolecular force tends to be the strongest? dispersion forces a. b.

1. Which intermolecular force tends to be the strongest? dispersion forces a. b. c. d. dipole-dipole forces hydrogen bonds van der Waals forces 2. What is the most important force…

1. Which intermolecular force tends to be the strongest? dispersion forces a. b.

1. Which intermolecular force tends to be the strongest? dispersion forces a. b. c. d. dipole-dipole forces hydrogen bonds van der Waals forces 2. What is the most important force…

1. Which ion is the strongest base? A) Br– B) NO3–C) I– D) F– 2 HCl (aq) is an e

1. Which ion is the strongest base? A) Br– B) NO3–C) I– D) F– 2 HCl (aq) is an example of a A) weak base. B) strong base. C) weak acid. D) strong acid. 3 Which species can be a Br…

1. Which is hotter? A piece of iron thats red hot or a tungsten thats red hot? -

1. Which is hotter? A piece of iron thats red hot or a tungsten thats red hot? - neither, they are at the same temp - tungsten, because it has a higher heat capacity - tungsten, b…

1. Which is not an important characteristic of elementary processes? A. Certain

1. Which is not an important characteristic of elementary processes? A. Certain intermediates are produced in one elementary process and consumed in another. B. Concentration expo…

1. Which is the most stable cation and which is the least stable cation? Cation

1. Which is the most stable cation and which is the least stable cation? Cation 2 is most stable; cation 3 is least stable. Cation 3 is most stable; cation 2 is least stable. Cati…

1. Which is the most stable cation and which is the least stable cation? Cation

1. Which is the most stable cation and which is the least stable cation? Cation 2 is most stable; cation 3 is least stable. Cation 3 is most stable; cation 2 is least stable. Cati…

1. Which is true about the amino acids that have an isoelectric point at about p

1. Which is true about the amino acids that have an isoelectric point at about pH 10? A) The side chain is basic. B) The side chain is aromatic. C) The side chain is acidic. D) Th…

1. Which isoelectronic series is correctly arranged in order of increasing radiu

1. Which isoelectronic  series is correctly arranged in order of increasing radius? A) K < Ge < Br < Ca B) Ge < Br < K < Ca C) K < Ca < Br < Ge D) Ca &l…

1. Which item of volumetric equipment should be use to: a. measure approximately

1. Which item of volumetric equipment should be use to: a. measure approximately 10mL of solution? b. measure 10.10mL of solution? 2. Why is it necessary to rinse a buret or pipet…

1. Which material has a higher percentage of lithium? 2. Does this help to expla

1. Which material has a higher percentage of lithium? 2. Does this help to explain why batteries made with LiMn2O4 cathodes deliver less power on discharging? Match the words in t…

1. Which measurement (density or conductivity) is more accurate to determine the

1. Which measurement (density or conductivity) is more accurate to determine the salt concentration of a solution? Explain your choice. 2. If a label on the back of a can of soup …

1. Which metal is the strongest oxidizing agent in your activity table? Which me

1. Which metal is the strongest oxidizing agent in your activity table? Which metal in your table is the strongest reducing agent? Explain. 2. If you wanted to design a battery fr…

1. Which metal will have a more explosive react ion with water : one with a high

1. Which metal will have a more explosive react ion with water : one with a high ionization energy or one with a low ionization energy? Why? 2. You have decided to investigate the…

1. Which method used to determine the two equivalence points (pH meter or indica

1. Which method used to determine the two equivalence points (pH meter or indicators) is more accurate? Justify this choice. 2. Even in a 0.050 M HCI solution an indicator is not …

1. Which name–formula pair is incorrect? A.magnesium sulfate heptahydrate, MgSO

1. Which name–formula pair is incorrect? A.magnesium sulfate heptahydrate, MgSO4·7H2O B.dinitrogen tetroxide, N2O4 C.strontium nitride, Sr3N2 D.hypochlorous acid, HClO2 E.titanium…

1. Which net ionic equation best represents the reaction that occurs when an aqu

1. Which net ionic equation best represents the reaction that occurs when an aqueous solution of barium chloride is mixed with an aqueous solution of sulfuric acid? [A] BaCl2 + H2…

1. Which nucleophilic substitution reaction is not likely to occur? 2. And which

1. Which nucleophilic substitution reaction is not likely to occur? 2. And which one is likely to occur? Though answers are marked, please provide explanaitons. 12) Waic nuckphc n…

1. Which of following acid highest kpa a) P-Chrobenoic Acid. b) P-Nitrobenzoic A

1. Which of following acid highest kpa a) P-Chrobenoic Acid. b) P-Nitrobenzoic Acid. c) Bennoic Acid, d) P-Toulic Acid 2. All of the following are reducing disaccharides except a)…

1. Which of the acids studied are weak? Which are strong? H ow can you tell from

1. Which of the acids studied are weak? Which are strong? H ow can you tell from the data? 2. Calculate the pKa for the weak acid from the Ka values given in the lab manual. exper…

1. Which of the carbon atoms in the following molecule appears furthest downfiel

1. Which of the carbon atoms in the following molecule appears furthest downfield in the 13C NMR spectrum? (CH3)2CH2COCH3 CH3=i CH2=ii CO=iii CH3=iv just answer with i, ii, iii, i…

1. Which of the compounds below is the major product of the following reaction?

1. Which of the compounds below is the major product of the following reaction? CH3 Inter- H30+ CH3OH H3C CH3 CH3 CH3 H3CTCH, H.CO. 3 . CH3 C. CH3 H H3cO. HO. CH3 e. CH3 2. Which …

1. Which of the compounds below is the major product of the following reaction?

1. Which of the compounds below is the major product of the following reaction? CH3 H2O+ H3C CH3OH CH3 CH3 CH3 CH3 3 H3CO H3C CH3 OH CH CH H3CO CH3 HO CH3e CH3 2. Which of the fol…

1. Which of the five d orbitals listed below, lie directly on the x , y & z axes

1. Which of the five d orbitals listed below, lie directly on the x, y & z axes, thus pointing directly towards the ligands in an octahedral transition metal complex, ML6? Sel…

1. Which of the five d orbitals listed below, lie directly on the x , y & z axes

1. Which of the five d orbitals listed below, lie directly on the x, y & z axes, thus pointing directly towards the ligands in an octahedral transition metal complex, ML6? Sel…

1. Which of the following NSAID drugs is not chiral? (D is incorrect) A. aspirin

1. Which of the following NSAID drugs is not chiral? (D is incorrect)             A. aspirin             B. ibuprofen             C. naproxen D. none, they are all chiral 2. Which…

1. Which of the following accurately portrays the relationship of pressure and v

1. Which of the following accurately portrays the relationship of pressure and volume in Boyle's Law? A) Air in the lungs of a scuba diver compresses at greater depths B) A tire w…

1. Which of the following additions will result in no change in the pH of a solu

1. Which of the following additions will result in no change in the pH of a solution? a) adding ammonium nitrate to an ammonia solution b) adding potassium chloride to a hydrochlo…

1. Which of the following alkenes is most likely to undergo rearrangement upon a

1. Which of the following alkenes is most likely to undergo rearrangement upon acid-catalyzed b. 2 c. 3 a. 2. What is (are) the major organic product(s obtained from the following…

1. Which of the following always performs an E2 reaction? DMSO Cl - LDA tertiary

1. Which of the following always performs an E2 reaction? DMSO Cl- LDA tertiary carbocation 2. What would happen to your yield if you didn't add enough base? Lower yield Higher yi…

1. Which of the following amino acid residues in a protein would most likely be

1. Which of the following amino acid residues in a protein would most likely be a target of a heavy metal such as Pb2+? a) Glycine b) Histidine c) Methionine d) Phenylalanine 2. W…

1. Which of the following amino acids has an aromatic side chain? a. Arg b. Tyr

1. Which of the following amino acids has an aromatic side chain? a. Arg b. Tyr c. Phe d. a and b e. b and c 2. Which amino acid has a side-chain sulfur bracketed by carbons and i…