Screen Shot 2022-09-13 at 5

The maximum number of spectra that can be recorded per second by ToF-MS is limited by the time taken by the slowest ions to go from the source to the detector. If the slowest ion took 45.6 microsecond to travel, at what frequency could you record spectra if a new extraction cycle were begun each time this heaviest ion reached the detector? 30000 spectra/s 10000 spectra/s 11000 spectra/s 500 spectra/s 22000 spectra/s

1- While cleaning out a laboratory shelf, you have made a mistake in labeling two bottles of ethanol and acetic acid. To identify the molecular structure of the contents of the bottle, samples were submitted for analysis using infrared spectroscopy, based on the IR results, draw the molecular structure of the molecule that would correspond to the spectrum for that compound. Justify vour answer Spectrum A Spectrum B 1000 W er lo O

Identify the following spectra. Full credit is only given if all pertinent peaks are assigned on the spectrum (~5-6 peaks). Label the peaks on the spectrum and place the structure of the compound in the box on the lower left-hand corner of the spectrum.  please on the graph circle the peak

Determine the standard concentration of A through E and then the absorbance. I just need clarification on if I add together the two ml values given.

Rel. Intensity MASS SPECTRUM 100- 80- 60- 40- 20- 0.0- 20 40 60 80 100 120 m/z The compound contains chlorine. The compound contains bromine. ○ The compound contains both bromine and chlorine. O The compound contains only carbon, hydrogen, and oxygen. ○ The compound contains only carbon and hydrogen.

help  please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working!

(give clear handwritten solution) Select wavelengths ranges in nano meters is associated with UV spectroscopy?

Please answer all and post below the answer the source from where you got the answer thank you!

Please explain the answer and how you arrived at the answer

the quation is in the photo

Assignment 2 1-While cleaning out a laboratory shelf, you have made a mistake in labeling two bottles of phenol and benzene. To identify the molecular structure of the contents of the bottle, samples were submitted for analysis using infrared spectroscopy, based on the IR results, draw the molecular structure of the molecule that would corespond to the spectrum for that compound. Justify vour answer Spectrum A Spectrum B 04 02 3000 2000 Wevenuter kni 1000 2000 Wavene m-1) 3000

Meet - xyo-uxva-zro Google bil 1- While cleaning out a laboratory shelf, you have made a mistake in labeling two bottles of ethanol and acetic acid. To identify the molecular structure of the contents of the bottle, samples were submitted for analysis using infrared spectroscopy, based on the IR results, draw the molecular structure of the molecule that would correspond to the spectrum for that compound. Justify your answer Spectrum A Spectrum B 0.0 0.6 0.4 0.2 1000 2000 Waverumber ion-1) 3000 ENG 4) Transmitance

12) If gloves are not worn when handling the cuvette in a spectrophotometry xperiment, how would this affect the absorbance reading (higher, or lower, or same) and ow would it make the concentration look, higher or lower?

Name of Experiment: Fluorescence Spectroscopy Q1: Purpose of experiment Q2: Introduction

please help Part II Data Analytical Wavelength read from the spectra (nm): Absorbance at the analytical wavelength for the 5 mL/5 mL mix Absorbance at the analytical wavelength for the 4 mL/6 ml mix 628.5 0.875 0.704 3. Find the molar extinction coefficient from the 4 mL/6 mL mix. Pathlength: 1.00 cm Volume of Brilliant Blue: 4,00 ml Volume of DI water. 6.00 ml Absorbance at the analytical wavelength for the 4 mL/6 ml mix: 0,704 Concentration of Brilliant Blue in the 4 mL/6 ml mix (M): Molar extinction coefficient from the 4 ml/6 mL mix (M cm') 4. Average molar extinction coefficient for Brilliant Blue (M cm)

Identify the compound that gives the mass spectrum and infrared spectrum shown here.

If you read the ingredients list for Cherry Kool-Aid it also lists RD&C Blue 1 as a dye present in the Kool-Aid mix. Why do we not have to worry about the content of the blue dye when determining the concentration of the red dye? The spectra for FD&C Red 40, Blue 1 and Yellow 5 are shown below.

which compound does this mass spectrum represent?  Please provide only typed answer solution no handwritten solution needed allowed

A student calibrated the mini-spectrophotometer with a blank solution, and then went to check their solution. They got a fingerprint on the cuvette while filling it. Because of this, the expected reading for the absorbance would be [Select] [Select] ✓ [Select] too high too low O which would cause the calculated value of Ke to be

Assignment 2 1-While cleaning out a laboratory shelf, you have made a mistake in labeling two bottles of phenol and benzene. To identify the molecular structure of the contents of the bottle, samples were submitted for analysis using infrared spectroscopy, based on the IR results, draw the molecular structure of the molecule that would correspond to the spectrum for that compound. Justify vour answer Spectrum A Spectrum B 3000 1000 200 Wevenumber kti 2000 Waveuner m-1) 2000 Transeitince Tranantance

please please answer super fast i need it before 9:30pm please answer all

I need the answer as soon as possible

Question 7 (Spectroscopic Analysis): Consider the following molecule. How many unique signals would this molecule generate on an ¹HNMR spectrum? O H3C₁¹ H3C Answer in numerical form (ie. 1, 2, 3...)

6. Relative Intensity Determine the molecular formula that goes with the following mass spectrum. Write this on the spectrum, and draw a structure that fits with this molecular formula. 100 80 69 20 m/z 51.0 52.0 53.0 9.7 6.6 3.3 77.0 18.8 78.0 7.3 79.0 8.9 89.0 7.5 104.0 7.4 105.0 3.2 106.0 72.5 107.0 5.9 140.0 32.0 141.0 100.0 142.0 8.0 143.0 31.7 144.0 2.3 tarantorpille 25 50 75 m/z 100 abou 125 [M]+ 141 amu

5

please helppp

You measure a sample in your spectrophotometer that has an absorbance of 1.00. What is the concentration of your sample in M.

6

Does a calibration curve alwasy compare concentration and absorbance? Or can it compare concentration and %T as well?

The levels of Vitamin B1 in a sample of milk was determined using the Standard Addition method and technique of fluorescence spectroscopy. 18.0 ml of the milk sample was diluted to 20.0 ml using distilled water and then the fluorescence was measured. The resulting signal was 210 units. A spike was made by taking 18.0 ml of the same milk sample, adding 1.0 ml of a 6.0 ppm Vitamin B1 standard solution, and then diluting to 20.0 ml using distilled water. The signal of the spiked milk was 540 units. Calculate the concentration of Vitamin B1 in the original milk sample (in ppm). Report to 3 decimal places.

Standard addition. A blood serum sample containing Na gave an emission signal of 4.27 mV. A small volume of concentrated standard Na was then added to increase the Na concentration by 0.104 M, without significantly  diluting the sample. This “spiked” serum sample gave a signal of 7.98 mV in atomic emission. Find the original concentration of Na in the serum.