EBK EXPLORING CHEMICAL ANALYSIS
EBK EXPLORING CHEMICAL ANALYSIS
5th Edition
ISBN: 8220101443908
Author: Harris
Publisher: MAC HIGHER
Question
Book Icon
Chapter 21, Problem 21.22P
Interpretation Introduction

Interpretation:

Expected mass of C4H11N3S+ and C4H11N3O+ has to be computed and ion that corresponds to measured m/z value of 133.0686 has to be identified.

Concept Introduction:

Molecular mass is defined as mass corresponding to mass of one molecule of substance, while nominal mass may be defined as mass of most abundant isotope of a particular ion or molecule. For instance, carbon exist as two isotopes C-12 and C-13. C-12 is abundant as much as 98.9 % while abundance of C-13 is only 1.1 %. So clearly nominal mass of carbon is 12 g.

For instance, molecular mass of benzene is calculated by exact atomic masses of C and H atom as follows:

  Molecular mass of C6H6=(6)(12.0107 u)+(6)(1.0078 u)=78.111 u

However, its nominal mass will take most abundant masses of C and H atoms into account and thus nominal mass is calculated as follows:

  Nominal mass of C6H6=(6)(12 u)+(6)(1 u)=78 u

Blurred answer
Students have asked these similar questions
Q4: Rank the relative nucleophilicity of halide ions in water solution and DMF solution, respectively. F CI Br | Q5: Determine which of the substrates will and will not react with NaSCH3 in an SN2 reaction to have a reasonable yield of product. NH2 Br Br Br OH Br
Q7: Rank the following groups in order of basicity, nucleophilicity, and leaving group ability. a) H₂O, OH, CH3COOT b) NH3, H₂O, H₂S
Q8: Rank the following compounds in order of increasing reactivity in a nucleophilic substitution reaction with CN as the nucleophile. Br A B NH2 LL F C D OH CI LLI E Q9: Complete the missing entities for following reactions (e.g., major product(s), reactants, and/or solvents) for the SN2 reactions to occur efficiently. Include curved-arrow mechanism for reactions a) to d). a) H "Cl D + -OCH 3 Page 3 of 5
Knowledge Booster
Background pattern image
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Text book image
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Text book image
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Text book image
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Text book image
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Text book image
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY