22. Which of the following structure(s) contribute to the most stable NO2 structure? +1 1:0-N=0 10=Ň...
22. Which of the following structure(s) contribute to the most stable NO2 structure? 10-N=0 II. I j=-ỏ: III. : -Ñ - A. I only B. II and III only C. I and II only D I, II and III only
NA afte. 9 Select the most stable conformation for trans-1-tert-butyl-3-methylcyclohexane. н D A 10. Which of the following compounds are optically active [will rotate plane polarized light (is chiral)]? CIL CI CI CI C/. CI A CI CI В D С 11. Rank absorption of the indicated bonds in decreasing (highest to lowest) wavenumber. II н x III a) III> II>I b) I> II III OH c) II>I> IlI d) III I> II но, но—н 12. How many stereocenters are...
in which one of the following is the most stable lewis structure a resonance structure (central atom bold) a) No2+ B) cocl2 c Cl03- d HCN e CO2
Which of the following resonance structures for OCN- will contribute most to the correct structure of OCN-? O(1 lone pair)=C(2 lone pairs)=N(1 lone pair) O(2 lone pairs)=C=N (2 lone pairs) O(3 lone pairs)–C≡N(with 1 lone pair) O(1 lone pair)≡C-N(3 lone pairs) They all contribute equally to the correct structure of OCN-.
Problem #10: Which of the following sequences converge? (i) an (-1)n+1 n n2 - 7 (-1)" n2 n? - (iii) an = cos(NT) (iv) an= sin(nn) (ii) an= -9 (A) (i) only (B) (ii) only (C) (i) and (iv) only (D) (i) and (iii) only (E) (ii) and (iii) only (F) (ii) and (iv) only (G) all of them (H) none of them
QUESTION 43 Which of the following is most stable? 11 III IV 0 0 0 0 ON LECTION 44 QUESTION 44 What is the most likely product of the reaction below? 1. LDA i 2. 3. H2O II HO IV QUESTION 45 Which reactant, reagent and conditions will give the best yield of (R)-butan-2-ol? (S)-butan-2-ol with NaOCH3 CH3OH (5)-butan-2-ol with 1) TSCI, pyridine followed by 2) NaOCH3 CH3OH (S)-butan-2-ol with 1) Nah followed by 2) CH3Br (R)-butan-2-ol with 1) TsCl,...
11,12,13,14,15 pls 11) The most stable confermation of 3a a-ca e.caw ca in the back) 12) Which of the following structures has the S configurationP CH 10) A) Only I Only BOnly Il DI and t C)i and 13) Which compounds are achiral? CI Br H CH3 H H Br HC V IV II E)v D) l and IV C) II, l and IV AB)L Il and IV A) L. II and V 14) I and II are: O I1...
1. The most stable conformation of trans-3-ethyl-1-iodocyclohexane is a. Et b. C. d Et Et 2. a 3. Which of the following is NOT a resonance structure of ozone? b. a. d. All are valid resonance structures C. 4. Arrange the following bicyclic alkenes in order of increasing stability (least stable to most stable) II II d. Il<lll< C. I<ll<llI b. I<lll<ll a. Ill<ll< 5 What is the correct Lewis structure for CHsNCO? b. No 0 НС H,C- a. d....
Identify the most stable enol form of the following monosaccharide. Which of the following statements about the reduction of D-galactose with NaBH_4 is correct? The resulting product is the optically inactive aldonic shown in structure III. The resulting product is the optically inactive aldaric acid shown in structure I. The resulting product is the optically active alditol shown in structure II. The resulting product is the optically inactive alditol shown in structure II. The resulting product is the optically active...
13. Which structure is most consistent with the following IR spectrum? 100 TRANSMITTANCE [%] 50 0 4000 3000 1000 500 2000 1500 WAVENUMBER (-1) ОН OH Н 11 III IV a. I b. II c. III d. IV e. V