Question
In: Chemistry
Use the data below from an electron impact mass spectrum of a pure compound to deduce...
Use the data below from an electron impact mass spectrum of a pure compound to deduce its structure. Draw your structure in the drawing window.
1.
| m/z | Relative intensity |
| 46 | 0.5 |
| 45 | 19 |
| 44 | 20 |
| 30 | 100 |
| 28 | 32 |
| 27 | 14 |
2.
| m/z | Relative intensity |
| 73 | 1.0 |
| 72 | 25 |
| 57 | 8 |
| 43 | 100 |
| 29 | 17 |
3.
| m/z | Relative intensity |
| 52 | 31 |
| 50 | 100 |
| 15 | 2 |
Thanks
Solutions
queen_honey_blossom answered 2 years agoRelated Solutions
Use the data below from an electron impact mass spectrum of a pure compound to deduce...
Use the data below from an electron impact mass spectrum of a
pure compound to deduce its structure.
m/z
Relative intensity
110
59
108
60
81
8
79
9
29
100
28
29
27
95
26
44
given CH4 as starting material, How to begin with the correct
structure? I know how to use Rule of 13 to find the molecular
formula.
Use the data below from an electron impact mass spectrum of a pure compound to deduce...
Use the data below from an electron impact mass spectrum of a
pure compound to deduce its structure. Draw your structure in the
drawing window.
Data selected from the NIST WebBook,
http://webbook.nist.gov/chemistry/
m/z
Relative intensity
66
32
64
100
49
26
29
72
28
83
27
60
I wrote it is a 5 membered ring with double bond on two sides but
it is incorrect
Use the data below from an electron impact mass spectrum of a
pure compound to...
Illustrate the mass spectrum of ammonia (gas) ionized by electron impact (EI) using 70 eV electrons...
Illustrate the
mass spectrum of ammonia (gas) ionized by electron impact (EI)
using 70 eV electrons
and Illustrate the spectrum for 12 eV electrons.
What form of NMR might be used to characterize ammonia?
Illustrate and label the NMR spectrum and list some of the principal
characteristics of NMR spectroscopy as a qualitative and
quantitative analytical method
How would you use a DEPT spectrum and a {1H}13C spectrum to deduce how many quaternary...
How would you use a DEPT spectrum and a
{1H}13C spectrum to deduce how many
quaternary carbon atoms you have?
Deduce the identity of the following compound from the spectral data given. C9H10O2: 13C NMR, δ...
Deduce the identity of the following compound from the spectral
data given.
C9H10O2: 13C NMR, δ
18.06 (quartet), 45.40 (doublet), 127.32 (doublet), 127.55
(doublet), 128.61 (doublet), 139.70 (singlet), 180.98 (singlet);
IR, broad 3500-2800, 1708 cm-1
The mass spectrum of an organic compound shows the relative abundances of M to be 38.68%...
The mass spectrum of an organic compound shows the relative
abundances of M to be 38.68% and M 1 to be 7.112%. Assuming the
peaks are caused by 12C and 13C isotopes, determine the number of
carbon atoms in the compound. Natural abundances: 12C is 98.93% and
13C is 1.07%
Peak intensity from a mass spectrum gives you what information about a compound? -The relative abundance...
Peak intensity from a mass spectrum gives you what information
about a compound?
-The relative abundance of each ion proportional to the most
intense (base) peak
-The mass of each fragment
-The total number of atoms present in each fragment
-The number of different isotopic forms present
-None of the answers shown are correct
When speaking of a chemical reaction, what is a transition
state?
-It is the lowest energy form of a product from an exothermic
reaction
-It is...
The proton NMR spectrum for a compound with the formula C7H14O is shown below along with...
The proton NMR spectrum for a compound with the formula C7H14O
is shown below along with carbon-13 spectral data in tabular form.
(It may be necessary to expand (zoom) some of the 1H signals to
view spin-spin splitting details.)
This compound exhibits strong infrared absorption at
1717 cm-1, but the 1500-1650 cm-1 region is
empty.
13C Data
Normal Carbon
DEPT-135
DEPT-90
Proton Shift
Relative Area
13.8
Positive
No peak
0.91
3.2
17.2
Negative
No peak
1.09
5.8
18.2
Positive
No...
Look at the mass spectral data below for the compound. Determine one possible molecular formula for...
Look at the mass spectral data below for the compound.
Determine
one possible molecular formula for each and draw a structure
that corresponds to the
formula.
Compound I
(An Imine and Nitro Group)
Mass Spectral Data
m/z
Relative
Abundance (%)
M+
172
100
M+1
173
10.6
M+2
-
-
Use the data below to generate a calibration curve for an unknown zinc compound. In order...
Use the data below to generate a calibration curve for an
unknown zinc compound. In order to determine the % zinc in the
compound, a solution was made with 1.75 g of the compound with a
total volume of 50.0 mL. The absorbance of this solution was
measured at 1.16. Assuming zinc is the only chemical species
contributing to the absorbance, calculate the % zinc in the unknown
compound.
Concentration (M)
Absorbance
0.025
0.13
0.070
0.41
0.13
0.87
0.16
1.12...
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