3 1 2 How many hydrogens should the compound have based on that spectrum? [Select] What is the shape of the 2H peak at ~ 4.2 ppm? [Select] How many hydrogens it should to be split by in order to have that shape? 3 1

Why is it that D hydrogens have a higher chemical shift than the E hydrogens? Aren't the D hydrogens less shielded than the E hydrogens which have carbons surrounding on both sides? And less shielding means higher chemical shift required?

Identify the following spectra. Please find 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 (from the table below, no numbering scheme). You do not have to indicate the exact wavenumber of the peak.

PLS ANSWER ONLY THE CIRCLED ONE! I just need the answer. Not a long paragraph. Just answer.

Intrpt as many of the main peaks in the following spectra as you can – do this by providing the chemical formula of the species responsible for the peak in each case

A compound has a mass spectrum that shows a 3:1 height ratio of its (M)** peak at m/z = 156 and its (M+2)** peak at m/z = 158. Which of the compounds below is consistent with this data? HO HO -Br -CI -CI O None of the choices are correct. Br

Determine the structures of these spectrums (each has an unsaturation of 5)

Arrange the following compounds in their correct order of chemical shift (). 1=Highest and 4=lowest. (All show just one signal in their 1HMR spectrum).

Need answer step by step

A researcher is studying cytochrome oxidase, a protein that uses iron to bind diatomic oxygen. She collects two IR spectra, shown below. In the first spectrum, no isotopic labeling is used (top). In the second, 160 has been replaced with 180 (bottom). 820 655 790 0.5- 714 695 733 820 655 755 0.5- 714 695 733 0- 600 650 700 750 800 850 Vo (cm") Based on the above ratio, which is the most likely source of this vibration, (a) the Fe-O stretch in Fell-O=0, or (b) the O-O stretch in Fell-O=O? You can assume that the atomic weight of Fe is 56. % Transmission