which of the following is not a likely consequence of increased CO2 in the atmosphere?

increase in tropospheric ozone levels

Why are mountain tops more susceptible than grassy plains to acid deposition

they contact clouds with more concentrated acid droplets

Why is water liquid at room temperature instead of a gas

water has hydrogen bonds between the molecules

Which statement Is correct?

UV-C is the most energetic of three forms

A gasolines octane rating is a measure of the

gasolines resitence to knocking in a vehicles engine

In an exothermic chemical reaction?

Heat is released as the reaction proceeds

Reverse Osmosis is used

to remove dissolved salts from sea water

What is the first law of thermodynamics?

Energy is neither created or destroyed

Which process plays the most important role in the greenhouse effect

energy radiated by the Earth is absorbed by the atmoshpere

water that is safe to clean and cook with

Both Bush and Clinton refused to sign the Kyoto protocol because

developing countries are not required to control gas emision

Which anthropogenic pollutants are implicated in the formation of most acidic percipitation

nitrogen oxides and sulfur oxides

How do SOx and NOx cause acid rain

They react with water to form acids

The atomic number is the same as

number of protons in the nucleus

What is the best definition for specific heat?

the quantity it takes to raise one gram of a substance by 1

In the petroleum industry what does a refinery do?

separates crude oil into fractions consisting of compounds

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Chem Final

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Questions 88

Answers

1
which of the following is not a likely consequence of increased CO2 in the atmosphere?
increase in tropospheric ozone levels
sea ice dissapearance
changes in ocean chemistry
Sea-level rise
2
Which is not a pure substance
air
sucrose
copper wire
helium
3
Why did the industrial-scale production of ammonia from nitrogen and hydrogen present a challng
ammonia is explosive
nitrogen is difficult to purify
Nitrogen is unreactive
hydrogen is unreactive
4
Why are mountain tops more susceptible than grassy plains to acid deposition
there is less oxygen at high altitudes
they are made of softer rock
they contact clouds with more concentrated acid droplets
they are often buried under snow
5
Energy that is stored in fossil fuels is known as?
Kinetic
Heat
Potential
Future
6
Why is water liquid at room temperature instead of a gas
it is a gas at room temperature
water has hydrogen bonds between the molecules
water is basic
water is acidic
7
Which statement Is correct?
UV-C is the most energetic of three forms
UV-A is the most energetic of three forms
All are equal
UV-B is the most energetic of three forms
8
A gasolines octane rating is a measure of the
pollutants produced by burning the gasoline
purity of the gasoline
gasolines resitence to knocking in a vehicles engine
energy content of the gasoline
9
A chemical reaction followed by an absorption of energy is called?
exothermic
endothermic
fast
catalyzed
10
The three way measure of success of a business is based on
Healthy communtities
healthy economics
all of the above
healthy ecosystems
11
In the periodic table, which elements typically have similar properties?
those is the same columns
those related diagonally
those in the same row
those on opposite sides
12
The ozone layer is found?
in the troposphere
in the mesosphere
in the stratosphere
Only around the equator
13
Which two gases make up more than 95% of inhaled air?
O3 and N3
CO2 and O3
NO2 and N2
02 and N2
14
What distinguishes the atoms of one element to another?
number of protons
number of protons and nuetrons
number of nuetrons
number of nuetrons plus electrons
15
A calorie is defined as exactly 4.184J therefore 1,000 cal is exactly
418.4 J
41.84J
4,184J
1000J
16
what atmospheric component is responsible for the natural acidity of rain
nitrogen
carbon dioxide
oxygen
ozone
17
Which of the following is a weak base?
NaOH
HCl
NH3
CaOH
18
In an exothermic chemical reaction?
the mass of the reactants is greater than the products
heat is absorbed as the reaction proceeds
Heat is released as the reaction proceeds
the mass of the products is greater thn the mass of the reac
19
What is the exponent for ppb
10^14
10^7
10^8
10^9
20
A hydrocarbon contains
carbon and water only
carbon and hydrogen
carbon water and oxygen
carbon, hydrogen, and oxygen
21
Which substance is not considered to be a air pollutant?
SO2
N2
NO2
O3
22
Which is produced in the greatest amount from a barrel of petroleum
home heating oil
lubricants and wax
asphalt and road oil
gasoline
23
Which is the most biologically dangerous type of radiation
UV-C
UV-A
UV-B
Infrared
24
Reverse Osmosis is used
for the ozonation of water supplies
to purify water by ion exchange
to remove dissolved salts from sea water
to add flourine to water supplies
25
Of five major gasesous components of air, which is the only 1 to vary place to place day to day
N2
H20 Vapor
CO2
Ar
26
What is the first law of thermodynamics?
Energy is neither created or destroyed
Energy comes from red bull
energy is the capacity to do work
Energy can be created of destroyed
27
Which process plays the most important role in the greenhouse effect
energy from the sun is reflected back into the atmosphere
energy from the sun is absorbed by earth
energy from the sun is aborbed by the atmosphere
energy radiated by the Earth is absorbed by the atmoshpere
28
What correctly describes groundwater
None of theo choices
Any fresh water found above ground in rivers or lakes
water found in ice caps
any water taken from aquifers
29
The lowest layer of our atmosphere is?
Troposphere
Mesosphere
Stratosphere
Ozone layer
30
Potable Water is
contaminated with poisons
hot water
water that is safe to clean and cook with
contaminated with lead
31
The ozone hole is most prominent on earth over
Africa
North America
Antartica
Europe
32
The process by which a solution is heated to its boiling point and the vapors are condensed
moonshining
cracking
distillation
vaporization
33
Both Bush and Clinton refused to sign the Kyoto protocol because
they were lazy
does not approve trading emission allowances
developing countries are not required to control gas emision
enforcement would be impossible
34
Which reactive compound is produced using Haber-Bosch process?
KNO3
NO2
NaNO3
NH3
35
Ozone is in our atmosphere bc it
reduced ir radiation
helps trees grow
abosrbs uv radiation
reacts with excess CO2
36
Which anthropogenic pollutants are implicated in the formation of most acidic percipitation
ozone and carbon monoxide
carbon oxides
nitrogen oxides and sulfur oxides
phosphoric and hdryocholric acid
37
Which atmospheric compound does not contribute to global warming
O3
CO2
N2
H2O
38
The energy that flows from a warmer body to a colder body is called?
Temperature
potential
heat
kinetic
39
During a chemical reaction...
laws of conservation may be briefly violated
atoms are rearranged
some atoms are destroyed and new ones are formed
some elements are destroyed and some are formed
40
In the long run the energy source that has the greatest potential to meet humanity need is
Water
Solar
Coal
Wind
41
How do SOx and NOx cause acid rain
They react with water to form acids
there is not sufficient evidence
they react with hydrogen gas in the atmospher
they react with ammonia to form acids
42
The atomic number is the same as
the mass number of an atom
number of nuetrons in a nucleus
number of protons and nuetrons in a nucleus
number of protons in the nucleus
43
The property of matter that determines the direction of heat flow is the?
Density
Mass
Temperature
Volume
44
The quantity 8.7 x10^5 is written in standard decimal notation as
0.00000087
870,000
0.000087
870.000
45
Combustion is a chemical process in which a fuel combines with _ to release energy
Oxygen
Carbon Dioxide
Nitrogen
Argon
46
Why was the Haber-Bosch process developed
reduction of NOx in vehicle emissions
nitrification of soil
production of ammonia
fun
47
which region of the uv spectrum is absorbed least by the atmosphere?
UV-C
UV-A
UV-B
They are all equal
48
What is the best definition for specific heat?
the quantity it takes to raise one gram of a substance by 1
the boiling point of a liquid in degrees celsius
the difference between the freezing point and boiling point
the quantity of heat required to make a liquid to boil
49
The acid neutralizing capacity of the lake or stream most often derives from the presence _
CaCO3
Sr(OH)2
NaCl
HNO3
50
In the petroleum industry what does a refinery do?
removes the druce oil from the ground
mixes natural gases or coal with crude oil to rid of impurty
separates crude oil into fractions consisting of compounds
separates crude oil from the coal
51
The quantity 0.0000064 expressed is scientific notation
6.4x10^6
6.4x10^7
6.4x10^-6
6.4x10^-7
52
The nucleus of an atom contains
electrons and protons only
only protons
protons and nuetrons only
electrons, protons, and nuetrons
53
Petroleum is a complex mixture of thousands of substances
hydrocarbons
natural gases
carbohydrates
proteins
54
The fact that Carbon is less electronegative than nitrogen means in a C-N bond the
shared electrons are to closer to the C-atom than to the N
C atom takes the electrons from the N forming C- and N+
Shared electrons are closer to the N atom than the C
N atom takes the elctrons from the C atom forming C+ and N-
55
The energy of motion is called?
Kinetic
Heat
Potential
Motion
56
Neither N2 or O2 are greenhouses gases because
overall electric charge does not change when they vibrate
infrared radiation causes their bonds to break
their atmospheric concentrations ar not changed by human act
N2 and O2 react making N2O2
57
What is the shape of PH3
bent
trigonal planar
tetrahedral
trigonal pyramidal
58
What would the temperature on Earth be In the absence of effects of CO2 and water
-270 C
-18 C
150 C
450 C
59
Why are automobiles a contributor to acid rain when there is no sulfur in gas to make SOx
catalic converters contain sulfur compounds
hydrocarbons contribute to acid rain
N from the atmopshere combines with O in the engine for SOx
that is incorrectbecause sulfur is in gas
60
Which of the following is a pure substance?
Lemonade
Sweet Tea
Gasoline
Silver wire
61
Which statement is not true?
in forming a solution, the solute dissoves the solvents
water is the solvent in an aqueous solution
pure water does not cunduct electricty
electrolytes dissolved in water produce a solution tht cnduc
62
isotopes of an element have the same number of _ but different number of _
protons; nuetrons
nuetrons; protons
protons; electrons
electrons; protons
63
Which of the following is the greatest consumer of coal by total mass?
Indonesia
India
China
US
64
what is the exponent for ppm
10^6
10^7
10^14
10^5
65
The primary product of combustion of sulfur is
SO2
H2SO3
H2S
H2SO4
66
What is the second law of thermodynamics?
Entropy of the universe is constantly increasing
The right to bear arms
Energy can not be created or destroyed
Heat is the only energy that can be converted into work
67
Which company has the highest per capita emission of CO2
Russia
Germany
China
US
68
Decreased atmospheric ozone concentration may lead to
increased occurrence of cataracts
all of of the choices are correct
harm to young marine life
increased incidences of melanomas
69
Every increase of one pH unit indictaes
none of the following
10 times less hydrogen ions
increase in acidity
10 times more hydrogen ions
70
Ozone is considered an air pollutant in the _ but is a valuable protective layer in the _
Mesosphere, stratosphere
Stratosphere, Mesosphere
Troposphere, stratosphere
stratosphere, troposphere
71
Which is a balanced equation showing hydrogen peroxide(H202) decomposing into H2 and 02
2H2 + O2 -> 2H2O2
H2 + 02 -> H202
2H2O2 -> 2H2 +O2
H202-> H2 + 02
72
What is special about the South Pole Versus the north pole that leads to ozone depletion south
the atmosphere is colder at the north
polar stratospheric clouds from almost exclusively at south
there is more land at the south
ozone molecules are broken up by magnetic forces at south
73
Which nitrogen-containing substance is generally unreactive
NaNO2
NH3
NO
N2
74
What is an advantage of using coal over petroleum?
carbon is a smaller proportion in coal
coal is a source of more fuels
coal reserves are greater in the US
as a solid, coal is easier to transport
75
Results of the montreal ptotcol include...
increased production of alternatives to CFCs
recycling CFCs
greatly reduced production of CFCs
All of the above
76
At water treatment plants aluminum sulfate and calcium hydroxide are added to
neutralize excess acidity
nuetralize excess ozone
contains too much residual ozone
remove suspended clay and dust particles
77
Which polutant r you more likely to encounter in dangerous concntrtions indoors rather than out
nitrogen dioxide
CO2
O3
CO
78
Free radicals are...
species with unpaired electrons
species such as H and OH
highly reactive chemical species
all of the choices describe free radicals
79
Electronegativity
is the same for all the elements in a family or group
decreases from right to left across a period on the table
total negative charge on a polyatomic ion
measure of an atoms attraction fro an electron in a bond
80
Which is not a mixture?
sodium chloride
a jar filled with rocks and sand
kool-aid
sea water
81
The _ concentration in the air over the desert differs dramatically from that in the rainforest
H2O
O2
N2
CO2
82
Which form of water disinfection continues to provide antibacterial protection
chlorination
UV Radiation
filtration
ozonation
83
Which is not a result of hydrogen bonding between water molecules?
water has a high specific heat
water is colorless and odorless
Ice floats on water
water has a high boiling point
84
What is the formula of the ionic compound formed from magnesium and Chlorine
Mg2Cl
MgCl
MgCl2
Mg2Cl2
85
A polar covalent bond is formed when
a metallic element reacts with a nonmetallic element
two atoms shar three or more electrons
two atoms share their bonding electrons unequally
two atoms of the same element form double or triple bonds
86
When naming virtually all compounds made up of two elements, the second element mentioned
preceded by "mono"
ends in "ide"
one presented in greater number of atos
always more metallic element
87
The greenhouse effect refers to the process by which
atmospheric gas trap and return ir radiation radiatd by eart
atomspheric oxygen and nitrogen absorb heat radiated by Eart
atmspheric nitrogen absorbs uv radiation radiated by earth
greenhouse gases absorb uv radiation from the sun
88
The main reason that water supplies are "chloronated" is
to kill disease-causing organisms in water
to precipitate lead salts from the water as insoluble
to produce gels that remove solids from water
to soften water

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