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Petroleum - What is it? Flashcards | StudBud
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Petroleum - What is it?
Petroleum - What is it?
29 terms
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StudBud Administration
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64 plays
chemistry in the community, science, chemistry, alkanes
Flashcards
29 cards
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Questions
29
Answers
1
Intermolecular forces are strongest in petroleum's
light distillates
residues (bottoms)
heavy distillates
gaseous fraction
2
Which sample of petroleum has
high viscosity
?
Mineral oil, (12-20 carbon atoms per molecule)
water (0 carbons)
propanol (3 carbons per molecule)
heptane (7 carbons per molecule)
3
Petroleum reserves are uniformly distributed throughout the world (true or false)
false
true
4
This is an isomer of...
propane
butane
ethane
pentane
5
At what level in fractionating tower is the fraction with the highest boiling point?
top
middle
bottom
6
An unbranched alkane containing seven carbons is called
propane
heptane
butane
hexane
7
This region has the largest petroleum reserves compared to its population
South America
Asia
Middle East
North America
8
Which alkane has a molar mass of 16 g/mol?
CH4
C4H10
C2H6
C3H8
9
What does the isomer name 3-methylhexane tell you?
there is a 3 Carbon branch off of one of the carbons
there are 3 branches off of the 6th carbon in the chain
there is a branch off of the 3rd carbon in the chain
the parent chain has 3 carbons
10
Structural isomers have the same
molecular geometry
chemical properties
molecular formula
physical properties
11
This region has the largest consumption of petroleum compared to its population
Asia
Europe
North America
Eurasia (Russia)
12
What is the formula for an alkane with 12 carbons?
CH12
C12H12
C12H26
C12H24
13
The energy stored in petroleum is from
microorganisms
atmosphere
meteors
sunlight
14
Hydrocarbons are compounds that contain
carbon & nitrogen atoms
oxygen & carbon atoms
oxygen & hydrogen atoms
carbon & hydrogen atoms
15
Which compound has the lowest boiling point?
C7H14
C5H12
C3H8
CH4
16
How many alkyl groups does 3-ethyl-2,4-dimethyloctane have?
6
3
2
9
17
What does the root "but-" stand for?
8
2
4
6
18
The process used to separate two or more liquids based on differing boiling points is
distillation
precipitation
crystallization
filtration
19
This is the structural formula for
butane
propane
ethane
pentane
20
As the number of C atoms in a molecule increase, the boiling points...
remains the same
vary with each hydrocarbon
decreases
increases
21
How many isomers does pentane have?
3
6
5
4
22
The saturated hydrocarbon with seven carbons is called (each C has 4 single covalent bonds)
nonane
hexane
propane
heptane
23
In a fractionating tower, the thick liquids that do not vaporize are called
waste gases
heavy distillates
gasoline
residues (bottoms)
24
Water and 2-propanol can be separated by distillation due to their differences in
colors
molecular formulas
specific gravity
boiling points
25
Isomers are different compounds that have
same arrangement, different element
same structural formula, different physical properties
same molecular formula, different structural formula
same empirical formula, different molecular formula
26
Alkanes are hydrocarbons with one or more ___ carbon-carbon bond.
double
single
triple
quadruple
27
Petroleum is separated into its components for use as fuel and other products using
precipitation
fractional distillation
a centrifuge
chromatography
28
Where in the fractionating tower is the temperature the lowest?
Middle
Bottom
Top
Same throughout
29
How many carbon atoms per molecule are found in gasoline fraction of petroleum?
5-12
18+
1-4
13-18
