Give 3 possible molecular formulas for a compound with a molecular ion peak of 148 and...
Propose three reasonable molecular formulas for a molecular ion at m/z = 176, (show calculations; 3 pts) Propose two reasonable structures for a hydrocarbon having an exact mass of 122.1096 that forms 1-ethyl-1-methylcyclohexane upon hydrogenation with excess H2 and Pd-C. (2 pts) 3. 4. A low resolution mass spectrum of a neurotransmitter gave a molecular ion at m/z s 153. Three possible formulas for this molecular ion are Coth/N,O2. Cat,NO, and C,HnN,O. A high resolution mass spectrum provided a exact...
An unknown compound A has an empirical formula of c3h6o and a molecular ion peak in its mass spectrum at m/z 116. It also has no IR absorption at 3200-3600cm^-1 but shows a peak at 1740cm^-1. The H NMR spectra data of A is given below in table format. Use this information to answer questions a-d below. 9 (15 Points). An unknown compound A has empiricl rmula of C,HO and a molecular ion peak in its mass spectrum at an...
Calculate the degrees of unsaturation in a compound with the molecular formula CsHs and draw two possible structures, including hydrogen atoms, for the formula. Number Degrees of unsaturation: In Up & View Solution Check Answer Next Ext
label each major peak with a molecular formula (including charge) label the molecular ion peak as "M+" (if present) label major peaks other than the molecular ion with three things: 1) the mass to charge ratio 2) the structure or formula for that charged fragment 3) another formula to show which fragment was lost by the molecular ion to form that ion Mass spec NEUTRAL COMPOUND 100- 80 2-6utanene 60 40 20- 75 60 65 70 35 40 45 10...
Given the following molecular formulas calculate the elements of unsaturation for each compound. (4 points) C3H3N3 CsH5C1:0
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%...
Determine a reasonable molecular formula for a compound with a molecular weight of 113. Show your work. b. Report the degrees of unsaturation for your formula.
4. Write the Lewis structure for each molecular compound or ion (give all possible structures) a. N20 b. Cl2CO d. O22 e. SeO 5. Use formal charge to identify the better (more stable) Lewis structure in each pair. Н Н H S Н-S—C a. Н н H-$—ҫ—н Н-С—$—н Н b.
A compound containing carbon, hydrogen, and perhaps other elements shows a mass spectrum with a molecular ion at 115. Suggest at least 2 possible structures for the compound. In the molecular ion region of the mass spectrum, a compound containing carbon, hydrogen, and perhaps other elements gives peaks at 90 and 92. The 92 peak is about 1/3 the height of the 90 peak. Give at least 2 possible structures for the compound.
1. An unknown hydrocarbon has a molecular ion peak at m/z 84 with a relative intensity of 31.3. The M+1 peak has a relative intensity of 2.06 and the M+2 peak has a relative intensity of 0.08. What is the possible molecular formula of the compound?