At the site of the explosion, a material is found and subsequent chemical analys
ID: 474990 • Letter: A
Question
At the site of the explosion, a material is found and subsequent chemical analysis shows:
C 37.01% H 2.22% N 18.5% O 42.27%
The mangled passengers are found in and around the crash, but must be identified by the substances found in their belongings or in their bodies, since they are not recognizable and their dental records are not available. Upon further investigation, one passenger was suspected of having been murdered before the crash, with the time of death approximately one hour before the crash.
(a) use the percent composition data in Table 1 below to determine the formulae for the compounds found with or in each of the passengers. Match these formulae with identity of each compound listed in Table 2 below. [Be certain to use the number of significant figures you need to use from the periodic table. For example, if four significant figures are given in the data (e.g. 67.31%), use four significant figures (e.g. atomic weight of 12.01) from the periodic table.
(b) Use the personal data in Table 3 below to make a probable identification of each passenger. The solution to the puzzle in each case is the one that the evidence points to by logical deduction.
(c) Figure out who was murdered and who is the most probable murderer. Explain your answers.
Table 1. Percent Composition Data of the Compounds Found in or with the Passengers' Bodies Com und Ana s Passenger C O Location 4.62 67.31 6.98 1.1 Blood 63.15 5.30 31.55 Face 46.66 4.48 1.1 17.76 Stomach 72.15 7.08 4.68 6.03 Po (2000 tablets) ckets 15.87 2.22 18.15 63.4 ood and pockets 8.38 75.42 9.57 Blood 6.63 37.01 18.5 42.27 Po ckets 57.14 6.16 9.52 27.18 Po ckets 7.45 80.48 9.39 2.68 Pockets 81.58 8.90 9.52 Po ckets 60.00 4.48 35.53 Po 63.56 6.00 9.27 1.1 PockExplanation / Answer
Passenger 1
Element
Mass
Moles
Mole ratio
C
67.31 grams
1 mol
=
5.609
mol /
0.330 =
17
12.0 grams
H
6.98 grams
1 mol
=
6.980
mol /
0.330 =
21.15 = 21
1.0 grams
N
4.62 grams
1 mol
=
0.330
mol /
0.330 =
1
14.0 grams
O
21.10 grams
1 mol
=
1.319
mol /
0.330 =
4
16.0 grams
Bob (Reno) Henderson
Formula is:
C17H21NO4
cocaine
Passenger 2
Element
Mass
Moles
Mole ratio
C
63.15 grams
1 mol
=
5.263
mol /
1.972 =
2.67
x 3 = 8
12.0 grams
H
5.30 grams
1 mol
=
5.300
mol /
1.972 =
2.69
x 3 = 8
1.0 grams
N
0 grams
1 mol
=
0
mol /
=
14.0 grams
O
31.55 grams
1 mol
=
1.972
mol /
1.972 =
1
x 3 = 3
16.0 grams
Jim LeClaire
Formula is:
C8H8O3
vanilla
Passenger 2
Element
Mass
Moles
Mole ratio
C
46.66 grams
1 mol
=
3.888
mol /
1.110 =
3.5
x 2 = 7
12.0 grams
H
4.48 grams
1 mol
=
4.480
mol /
1.110 =
4
x 2 = 8
1.0 grams
N
31.1 grams
1 mol
=
2.221
mol /
1.110 =
2
x 2 = 4
14.0 grams
O
17.76 grams
1 mol
=
1.110
mol /
1.110 =
1
x 2 = 2
16.0 grams
Jim LeClaire
Formula is:
C7H8N4O2
thiobromine
Passenger 3
Element
Mass
Moles
Mole ratio
C
72.18 grams
1 mol
=
6.015
mol /
0.334 =
18
12.0 grams
H
7.04 grams
1 mol
=
7.040
mol /
0.334 =
21
1.0 grams
N
4.68 grams
1 mol
=
0.334
mol /
0.334 =
1
14.0 grams
O
16.03 grams
1 mol
=
1.002
mol /
0.334 =
3
16.0 grams
Bill (Cadillac) Jackson
Formula is:
C18H21NO3
codeine
Passenger 4
Element
Mass
Moles
Mole ratio
C
15.87 grams
1 mol
=
1.323
mol /
1.296 =
1
x 3 = 3
12.0 grams
H
2.16 grams
1 mol
=
2.16
mol /
1.296 =
1.67
x 3 = 5
1.0 grams
N
18.15 grams
1 mol
=
1.296
mol /
1.296 =
1
x 3 = 3
14.0 grams
O
63.41 grams
1 mol
=
3.963
mol /
1.296 =
3.05
x 3 = 9
16.0 grams
Amadeo Oldere
Formula is:
C3H5N3O9
nitroglycerine
Passenger 5
Element
Mass
Moles
Mole ratio
C
75.42 grams
1 mol
=
6.285
mol /
0.598 =
10.5
x 2 = 21
12.0 grams
H
6.63 grams
1 mol
=
6.630
mol /
0.598 =
11
x 2 = 22
1.0 grams
N
8.38 grams
1 mol
=
0.599
mol /
0.598 =
1
x 2 = 2
14.0 grams
O
9.57 grams
1 mol
=
0.598
mol /
0.598 =
1
x 2 = 2
16.0 grams
Norm Anderson
Formula is:
C21H22N2O2
strychnine
Passenger 5
Element
Mass
Moles
Mole ratio
C
37.01 grams
1 mol
=
3.084
mol /
1.321 =
2.33
x 3 = 7
12.0 grams
H
2.22 grams
1 mol
=
2.220
mol /
1.321 =
1.68
x 3 = 5
1.0 grams
N
18.5 grams
1 mol
=
1.321
mol /
1.321 =
1
x 3 = 3
14.0 grams
O
42.27 grams
1 mol
=
2.642
mol /
1.321 =
2
x 3 = 6
16.0 grams
Norm Anderson
Formula is:
C7H5N3O6
trinitrotoluene
Passenger 6
Element
Mass
Moles
Mole ratio
C
57.14 grams
1 mol
=
4.762
mol /
0.680 =
7
x 2 = 14
12.0 grams
H
6.16 grams
1 mol
=
6.160
mol /
0.680 =
9
x 9 = 18
1.0 grams
N
9.52 grams
1 mol
=
0.680
mol /
0.680 =
1
x 2 = 2
14.0 grams
O
27.18 grams
1 mol
=
1.699
mol /
0.680 =
2.5
x 2 = 5
16.0 grams
Archie Starr
Formula is:
C14H18N2O5
aspartame
Passenger 7
Element
Mass
Moles
Mole ratio
C
80.66 grams
1 mol
=
6.722
mol /
0.168 =
40
12.0 grams
H
7.39 grams
1 mol
=
7.390
mol /
0.168 =
44
1.0 grams
N
9.39 grams
1 mol
=
0.671
mol /
0.168 =
4
14.0 grams
O
2.68 grams
1 mol
=
0.168
mol /
0.168 =
1
16.0 grams
Lisa Johnson
Formula is:
C40H44N4O
curare
Passenger 7
Element
Mass
Moles
Mole ratio
C
81.58 grams
1 mol
=
6.798
mol /
0.680 =
10
12.0 grams
H
8.90 grams
1 mol
=
8.90
mol /
0.680 =
13
1.0 grams
N
9.52 grams
1 mol
=
0.680
mol /
0.680 =
1
14.0 grams
O
0 grams
1 mol
=
mol /
=
16.0 grams
Lisa Johnson
Formula is:
C10H13N
dimetacrine (empirical formula)
Passenger 8
Element
Mass
Moles
Mole ratio
C
60.00 grams
1 mol
=
5.000
mol /
2.221 =
2.25
x 4 = 9
12.0 grams
H
4.48 grams
1 mol
=
4.480
mol /
2.221 =
2
x 4 = 8
1.0 grams
N
0 grams
1 mol
=
mol /
=
14.0 grams
O
35.53 grams
1 mol
=
2.221
mol /
2.221 =
1
x 4 = 4
16.0 grams
Connie Majors
Formula is:
C9H8O4
aspirin
Passenger 8
Element
Mass
Moles
Mole ratio
C
63.56 grams
1 mol
=
5.297
mol /
0.662 =
8
12.0 grams
H
6.00 grams
1 mol
=
6.000
mol /
0.662 =
9
1.0 grams
N
9.27 grams
1 mol
=
0.662
mol /
0.662 =
1
14.0 grams
O
21.17 grams
1 mol
=
1.323
mol /
0.662 =
2
16.0 grams
Connie Majors
Formula is:
C8H9NO2
acetominophen
Passenger
Most Probable Identity
Passenger
Most Probable Identity
1
Bob Henderson
5
Norm Anderson
2
Jim LeClaire
6
Archie Starr
3
Bill Jackson
7
Lisa Johnson
4
Amadeo Oldere
8
Connie Majors
Norm Anderson was murdered by Lisa Johnson
Element
Mass
Moles
Mole ratio
C
67.31 grams
1 mol
=
5.609
mol /
0.330 =
17
12.0 grams
H
6.98 grams
1 mol
=
6.980
mol /
0.330 =
21.15 = 21
1.0 grams
N
4.62 grams
1 mol
=
0.330
mol /
0.330 =
1
14.0 grams
O
21.10 grams
1 mol
=
1.319
mol /
0.330 =
4
16.0 grams
Bob (Reno) Henderson
Formula is:
C17H21NO4
cocaine
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.