The improvement in S/N in progressing from spectrum A to spectrum D in figure 5-15 needs to be calculated. Concept introduction: Signal-to-noise ratio (S/N) is a scale used in engineering and science to compare the level of the signal to the background noise. It is defined as ratio of power of signal to the noise and it is expressed in decibels.

Question

A mass spectrum with M+ at m/z = 101 with a minor M+1 peak contains what diagnostic atom? Please explain.

Answer 1

Question

Chapter 5, Problem 5.12QAP

Interpretation Introduction

Interpretation:

The improvement in S/N in progressing from spectrum A to spectrum D in figure 5-15 needs to be calculated.

Concept introduction:

Signal-to-noise ratio (S/N) is a scale used in engineering and science to compare the level of the signal to the background noise. It is defined as ratio of power of signal to the noise and it is expressed in decibels.

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A mass spectrum with M+ at m/z = 101 with a minor M+1 peak contains what diagnostic atom? Please explain.

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O Macmillan Learning Co(II) was used as an internal standard to analyze a sample of Ti(IV) with atomic absorption spectroscopy (AAS). A standard mixture containing 1.30 µg Co/mL and 1.48 µg Ti/mL measured by AAS produced a signal-to-signal ratio of 2.13 Ti : 1.00 Co. A mixture was prepared by combining 5.50 mL of a Ti(IV) solution of unknown concentration with 3.50 mL of a 13.4 µg/mL solution of Co(II). The absorbance of the mixture at the Ti(IV) wavelength was 0.139 and the absorbance at the Co(II) wavelength was 0.208. Determine the concentration, in moles per liter, of Ti(IV) in the original unknown solution. concentration: M Ti(IV)