Chemistry concepts and calculations

1. Which of the following statements regarding catalytic efficiency is TRUE ? a)

1. Which of the following statements regarding catalytic efficiency is TRUE? a) It reflects both substrate binding and catalytic events b) The quantitative measure is Km/kcat c) I…

1. Which of the following statements regarding classification and/or function of

1. Which of the following statements regarding classification and/or function of proteins is correct? options: a) An oligomeric protein implies that a protein has multiple alpha h…

1. Which of the following statements regarding the peptide in the diagram is/are

1. Which of the following statements regarding the peptide in the diagram is/are correct? options: This peptide contains 7 amide/peptide linkages. This peptide contains both types…

1. Which of the following statments is true re an inonic bond in MgO? a. Forming

1. Which of the following statments is true re an inonic bond in MgO? a. Forming an ionic bond between Mg2+ and O2- requires energy. b. Magnesium atoms gain electrons and oxygen a…

1. Which of the following substances is a strong acid? a. HCIO -- weak acid b. H

1. Which of the following substances is a strong acid? a. HCIO -- weak acid b. HF   -- weak acid c. HNO2 -- weak acid d. H3PO4  -- weak acid e. HNO3 -- strong acid acid Therefore …

1. Which of the following substances is a strong electrolyte? A) CH:OH 2. Which

1. Which of the following substances is a strong electrolyte? A) CH:OH 2. Which of the following substances is a strong electrolyte? 3. Which of the following substances is a none…

1. Which of the following substances is the best reducing agent? Briefly explain

1. Which of the following substances is the best reducing agent? Briefly explain your answer. a) Ag b) Zn c) Li+ d) Ag+ e) Al Which of the following substances is the best oxidizi…

1. Which of the following terms can be used to describe an electrochemical cell

1. Which of the following terms can be used to describe an electrochemical cell in which a spontaneous chemical reaction generates an electric current? (1) Electrolytic Cell (2) G…

1. Which of the following tests cannot be used to distinguish between mediated a

1. Which of the following tests cannot be used to distinguish between mediated and non-mediated transport? a. Determine the dependence of the concentration of the substance on its…

1. Which of the following two alternatives is more expensive? (a) Unirradiated u

1. Which of the following two alternatives is more expensive? (a) Unirradiated uranium is used for fabrication of UO2 fuel, enriched to 3.9% in U-235. Assume tails are 0.25%, conv…

1. Which of the following variable declarations are correct? If a variable decla

1. Which of the following variable declarations are correct? If a variable declaration is not correct, give the reason(s) and provide the correct variable declaration. double conv…

1. Which of the following views hides the ribbon and shows text on the screen in

1. Which of the following views hides the ribbon and shows text on the screen in an easy-to-read format?: * a. Full Screen Reading b. Web Layout c. Print Layout d. Draft 2. If you…

1. Which of the following was NOT among Democritus\'s ideas? A.) Matter consists

1. Which of the following was NOT among Democritus's ideas? A.) Matter consists of tiny particles called atoms. B.) Atoms are indivisible. C.) Atoms retain their identity in a che…

1. Which of the following was NOT among Democritus\'s ideas? A.) Matter consists

1. Which of the following was NOT among Democritus's ideas? A.) Matter consists of tiny particles called atoms. B.) Atoms are indivisible. C.) Atoms retain their identity in a che…

1. Which of the following will decrease the rate of the reaction? Select one: (n

1. Which of the following will decrease the rate of the reaction? Select one: (no explanations needed) A. Decrease the concentration of the reactants B. Decrease the activation en…

1. Which of the following will provide the most accurate means of measuring pH?

1. Which of the following will provide the most accurate means of measuring pH? a. bromphenol blue b, litmus paper c. pH paper d. a pH meter 2. When a drop of a solution is placed…

1. Which of the following words means to remove one or more electrons from a mol

1. Which of the following words means to remove one or more electrons from a molecule? O reaction O oxidation O reduction O replication O electrification 2 What are the units on t…

1. Which of the following would make a buffer solution? Explain your choice brie

1. Which of the following would make a buffer solution? Explain your choice briefly. (a) Solution A: 45 mL of 0.30 M NaC2H3O2 + 25 mL of 0.17 M NaCl (b) Solution B: 26 mL of 0.14 …

1. Which of the follwing buffered solutions has the greatest buffering capacity?

1. Which of the follwing buffered solutions has the greatest buffering capacity? A- 0.35 M HF and 0.25 M KF. B- 0.5 NaNO3 and 0.5 NH3 C- 100 mM HC204 and 100 mM Ca(C2O4)2. D - 10 …

1. Which of the four resonance structures for ozone below is the least likely? R

1. Which of the four resonance structures for ozone below is the least likely? Remember to consider the formal charge on each atom, and the number valence electrons in the structu…

1. Which of the four resonance structures for ozone below is the least likely? R

1. Which of the four resonance structures for ozone below is the least likely? Remember to consider the formal charge on each atom, and the number valence electrons in the structu…

1. Which of the four resonance structures for ozone below is the least likely? R

1. Which of the four resonance structures for ozone below is the least likely? Remember to consider the formal charge on each atom, and the number valence electrons in the structu…

1. Which of the four resonance structures for ozone below is the least likely? R

1. Which of the four resonance structures for ozone below is the least likely? Remember to consider the formal charge on each atom, and the number valence electrons in the structu…

1. Which of the major physical laws of chemistry are you testing when you calcul

1. Which of the major physical laws of chemistry are you testing when you calculate the pencent recovery? Explain. 2. The mass of recovered copper may be measure greater or less t…

1. Which of the principles apply to sedimentary rocks? 2. Look at the diagrams b

1. Which of the principles apply to sedimentary rocks? 2. Look at the diagrams below each question to answer. a. In figure 1 below, could it be possible to determine an absolute a…

1. Which of the reactions below represents oxidation-reduction? I: HBr (g) + Al

1. Which of the reactions below represents oxidation-reduction? I: HBr (g) + Al (s) —> H2 (g) + AlBr3 (s) II: HClO4 (aq) + Ti (OH)2 (aq) —> HClO (aq) + TiO2 (s) + 2H2O (l) I…

1. Which of the salts tested in the procedure were basic and which were acidic?

1. Which of the salts tested in the procedure were basic and which were acidic? 2. List the acidic salts in increasing order of acid strength, then list the basic salts in increas…

1. Which of the statements about enzymes is true? A. Are catalysts that speed up

1. Which of the statements about enzymes is true? A.Are catalysts that speed up energetically unfavorable reactions when coupled with a favorable reaction that releases equal or g…

1. Which of these can be statements of II law of TD? Check all that apply. (a) H

1. Which of these can be statements of II law of TD? Check all that apply. (a) Heat can flow only from cold body to hot body with no work input (b) Heat can flow only from hot bod…

1. Which of these can be statements of II law of TD? Check all that apply. (a) H

1. Which of these can be statements of II law of TD? Check all that apply. (a) Heat can flow only from cold body to hot body with no work input (b) Heat can flow only from hot bod…

1. Which of these is not aromatic? 5. Which of the indicated carbon atoms is sp

1. Which of these is not aromatic? 5. Which of the indicated carbon atoms is sp hybridized? CH CH 6. Which energy diagram corresponds to this reaction 2. Which intermediate is for…

1. Which of these statements about the common-ion effect is most correct? [A] Co

1. Which of these statements about the common-ion effect is most correct? [A] Common ions alter the equilibrium constant for the reaction of an ionic solid with water. [B] The sol…

1. Which of these statements about the urea cycle is incorrect? a.) Is required

1. Which of these statements about the urea cycle is incorrect?  a.) Is required to remove excess nitrogen b.) Will be active after a diet rich in proteins c.) Will be active afte…

1. Which of these statements about this energy profile of a reaction mechanism i

1. Which of these statements about this energy profile of a reaction mechanism is true? There are three elementary steps in this mechanism. The first elementary step is the slow s…

1. Which of these statements is TRUE? a) Buffering is the phenomenon whereby tha

1. Which of these statements is TRUE? a) Buffering is the phenomenon whereby that around the pKa the pH of a solution does not change appreciably even when large amounts of acid o…

1. Which one is the correct expression in MATLAB for this equation? log10(x) / l

1. Which one is the correct expression in MATLAB for this equation? log10(x) / lnx a log(x)/Mog(x) b. log10(x)nx) c. log(x)/in(x) d. log10/(x) Mlogx) 2. Write the output matrix &g…

1. Which one of the following SI unit prefix definitions is not correct? (a) 1 u

1. Which one of the following SI unit prefix definitions is not correct? (a) 1 um 1x106m (b) 1 ns 1x109 s (c) 1 Mbyte 1x106 bytes (d) 1 kca 1x103 cal (e) 1 cl 1x102 L 2. In the ca…

1. Which one of the following compounds has a ?max in its UV-visible spectrum wi

1. Which one of the following compounds has a ?max in its UV-visible spectrum with the longest wavelength? a.) (4E,7E)-dodeca-1,4,7-triene b.) (2E,4E,6E)-dodeca-2,4,6-triene c.) (…

1. Which one of the following molecules would be most polar? a-H2 b-HI C-HF d-HC

1. Which one of the following molecules would be most polar? a-H2 b-HI C-HF d-HCI e-HBr 2) The weakest interparticle attractions exist between particles of a and the strongest int…

1. Which one of the following samples has the greatest mass? A.10.0 mol of krypt

1. Which one of the following samples has the greatest mass? A.10.0 mol of krypton, Kr B.5.0 mol of ammonia, NH3 C.0.30 mol of camphor, C10H16O D.4.0 mol of iodine vapor, I2 E.2.5…

1. Which one of these is the best representation of a saturated solution? Be sur

1. Which one of these is the best representation of a saturated solution? Be sure to explain why. 2. The following compounds dissolve readily in water. If you prepare a 0.100 M aq…

1. Which package is the Graphics class part of? _________________ . a. javax.swi

1. Which package is the Graphics class part of? _________________ . a. javax.swing b. java.swing c. java.awt d. javax.awt e. java.graphics 2. The name of the method used to set th…

1. Which part of the ADT tells the programmer using it how to use it? a. The imp

1.    Which part of the ADT tells the programmer using it how to use it? a.   The implementation b.   The scope resolution c.   The abstractness d.   The interface 2.    In which …

1. Which peak on the energy diagram (lab manual) for this experiment represents

1. Which peak on the energy diagram (lab manual) for this experiment represents the transition state in which water has reacted with the carbocation? a. the second peak b. the thi…

1. Which phase of the software life-cycle is usually the most expensive? A. Anal

1. Which phase of the software life-cycle is usually the most expensive? A. Analysis and specification of the task B. Design C. Implementation D. Maintenance and evolution 2. Whic…

1. Which point is the end point for the titration of weak acid? 2. Which point i

1. Which point is the end point for the titration of weak acid? 2. Which point is the end point for the titration of the strong acid? 3. Which point of the titration is excess bas…

1. Which principle or rule is violated by the following orbital diagram of an at

1. Which principle or rule is violated by the following orbital diagram of an atom in its ground state? A.Heisenberg uncertainty principle B.Pauli exclusion principle C.Hund's rul…

1. Which reagents are needed to carry out the following transformation efficient

1. Which reagents are needed to carry out the following transformation efficiently? A.  1) -OCH3 2) CH3OH, Deprotonation B.  1) H2SO4, H2O 2) Deprotonation C.  1) H2SO4, HOAc 2) K…

1. Which represents an estimated measurement? A) The U.S. national debt is 6 tri

1. Which represents an estimated measurement? A) The U.S. national debt is 6 trillion dollars. B) My bank account contains 19 dollars and 26 cents. C) A calendar week has 7 days. …

1. Which response lists all of the following reactions that are spontaneous unde

1. Which response lists all of the following reactions that are spontaneous under standard electrochemical conditions? I. Cr(s) + 3Fe3+ 3Fe2+ + Cr3+ II. 2Fe2+ + Cu2+ 2Fe3+ + Cu II…