Calculate the ratio of the (M+2)+ and the (M+4)+ to M+ peak heights for a) C10H6Br2 b) C3H7ClBr c) C6H4Cl2 Note: Only consider the halide isotopes, don’t consider the carbon isotopes. Most Abundant isotope Abundance of other isotopes relative to 100 Parts of the most abundant 35Cl 37Cl-32.5 79Br 81Br-98.0
What is dead time. Calculate the peak height of R if a sample containing equal m injected into the column and the following information was obtained as given in table: Parameters 6 x 104 M1 cm 3 x 104 M cm1 ε254 peak height 103 mm peak half-width7.6 mm 14.9 mm What is dead time. Calculate the peak height of R if a sample containing equal m injected into the column and the following information was obtained as given in...
The photoelectron spectrum of an element X is shown below (the peak height ratio follows 1: 1: 3: 1: 1.5 from left to right). Identify X. Explain how you arrived at your answer Relative number of electrons 208 1.01 18.7 13.5 1.95 IE (MJ/mol) Figure 2. PES spectrum for “X”
2. For the following isotopic peak data, determine the molecular formula, calculate the degrees of unsaturation, and propose one possible structure: 2. For the following isotopic peak data, determine the molecular formula, calculate the degrees of unsaturation, and propose one possible structure: Peak Mass Relative Formula DOU Structure (MZ) Height (M)+. 87.105 100.0% (M+1)+. 88.108 5.4% The (M)" peak is an odd number. What does this tell you? B. Peak Formula DOU Structure Mass (MZ) Relative Height (M]+. 100.089 100.0%...
a. Predict the multiplicity and peak areas ratio (for example 1:3:3:2) for the 13C NMR signal in methanol-d3,13CD3OH. Explain using 2n+1 and multiplicity (peak area ratio) b. Predict the multiplicity and peak areas ratio (for example 1:3:3:2) for the 13C NMR signal in acetone-d6, (CD3)2CO. (Do this only for the13CD3group) Explain using 2n+1 and multiplicity (peak area ratio)
Which of the following compounds is consistent with an M** peak at 73 m/z ratio? a. CH3CH2CH(CH3)2 b. CH3CH(OH)CH2CH3 C. CH3CH2OCH2CH3 d. CH3(CH2)3NH2
A compound has the chemical formula C5H11CI. The M+ peak should be at m/z = and there should also be an M+1 peak at m/z = and an M+2 peak at m/z = If the height of the M+ peak is 27, the height of the M+1 peak should be and the height of the M+2 peak should be approximately
In an HPLC analysis, 5.0 mg/L carotene standard sample gave a peak with a height of 0.37, an area of 7859, and a retention time of 27.8 min. On the same chromatogram, the internal standard peak appeared at 24.3 min with a heigh of 0.21 and an area of 5268. An unknown sample was analyzed with the HPLC using the same method and gave three peaks in the chromatogram. Peak 1 has a height of 0.22, an area of 5713,...
QUESTION 1 10 point A compound has the chemical formula C3H15Br. The M+ peak should be at m/2 = and there should also be an M+1 peak at m/z = and an M+2 peak at m/z = If the height of the M+ peak is 50, the height of the M+1 peak should be and the height of the M+2 peak should be approximately QUESTION 2 A compound has the chemical formula C5H11CI. The M+ peak should be at m/2...
In the following electropherogram, for each STR loci identify the heterozygous peak height ratio, the major and minor allele number, and contributor ratio 100 600 200 12 329. 12 27 196.29 1940 32.2 217.85 681 15 12 3934 152.73 4669 722 262.92 279.15 2777 464 309.01 898 13 143.89 28 200.08 10 21.64 271.00 30 207.97 439 123.39 2582 170.95 819 228.40 1143 268.05 392 16 311.30 1433 13 236.28 2151 276.09 1892 19 323.97 950 127.39 74.95 182.92 2127...