Nitrox Final Exam – Questions With Verifiable
Solutions
Air is comprised of 21% Oxygen and ___________ % Nitrogen. Correct Answer
- Air is comprised of approximately 21% Oxygen and 79% Nitrogen
Nitrox has more ____________ than air. Correct Answer - oxygen -> nitrox is
a special mix that contains more than 21% Oxygen
True or False
EAN stands for enriched air nitrox Correct Answer - True
other abreviations are EANx
EAN32 contains 32% of ____________? Correct Answer - oxygen
True or false: the TDI Nitrox course includes using nitrox mixes from EAN22
to EAN40. Correct Answer - True, this course only addresses the use of
22-40% Oxygen
True or false: Nitrox offers several advantages, without any added risk.
Correct Answer - False, nitrox has added risks with breathing too much
Oxygen and getting oxygen poisoning.
True or false: Pressure is the force, or weight, pressing upon a diver, an object,
or a gas. Correct Answer - true
_______________ bar/atm is equivalent to one kilogram per square centimeter/
14.7 psi per square inch. Correct Answer - at the surface, a person
experiences the weight od the Earth's atmosphere pressing downward. in the
metric system, this weight is defined as one barometric unit.
Every 10m/33ft in depth exerts _______ bar/atm in additional pressure.
Correct Answer - 1
At 30m/99 ft, the ambient pressure is _________ bar/atm Correct Answer -
4
,Boyle's law has no effect on any gas contained within a sealed rigid container,
such as a: Correct Answer - scuba cylinder, and thus the air within the
cylinder is not impacted by the principal of Boyle's law so long as it remains
inside the cylinder.
True or False" The most important issue related to Boyle's law is that the
pressure of the breathing gas, inside a diver's lungs during a dive, will be 50%
less than the ambient pressure surrounding the diver. Correct Answer -
the pressure of the breathing gas inside the diver's lungs during a dive, will be
equal to the ambient pressure surrounding the diver
True or False: Within a gas mixture, the specific pressure of an individual gas
is referred to as the partial pressure of the gas. Correct Answer - true
A gas will always flow from an area of __________ partial pressure to an area of
_________ partial pressure. Correct Answer - From Dalton's research, he
found that a confined gas will spread evenly throughout all available
space(moving from an area of high partial pressure to an area of low partial
pressure, to equalize with any area of lower partial pressure); in the process,
it will effectively co-mingle with all other gases confined within that space,
resulting in a uniform mixture irrespective of any individual partial pressures.
At 20m/66ft the partial pressure of oxygen, in air, is ______ bar/atm. Correct
Answer - 0.63
The diver will be assured that a uniform breathing mix will be delivered from
his cylinder, through his _______, regardless of the components within the mix.
Correct Answer - because gases spread evenly and co-mingle within any
given space, the diver will be assured that a uniform breathing mix will be
delivered from his cylinder, through his regulator, regardless of the
components within the mix.
_________________ examined the solubility of gases in liquids, and discovered that
the specific quantity (mass) of a gas, which will be dissolved into a liquid, is
dependent upon two factors: (1) the partial pressure of the gas; and (2) the
coefficient of that gas in a particular liquid. Correct Answer - William
Henry
, True or False: when a significant or rapid increase in pressure is exerted upon
a liquid it may cause some of the dissolved inert gas to come out of solution.
Correct Answer - False
when a significant or rapid decrease in pressure is exerted upon a liquid it
may cause some of the dissolved inert gas to come out of solution, creating
bubbles
True or false: When the partial pressure of a gas is higher in the lungs than the
same gas dissolved in the blood, additional gas will pass through the alveoli
into the blood Correct Answer - True
true or false: when tissues have absorbed all of the nitrogen that is possible at
a given ambient pressure, the tissues are considered to be de-saturated
Correct Answer - false, they are saturated
true or false: Because of the pressure gradient when descending the diver
must begin on-gassng additional nitrogen Correct Answer - true
Because of the varying characteristics of tissues themselves, different tissues
will absorb nitrogen at different ___________. Correct Answer - rates
True or False: After a dive, the process of off-gassing the additional nitrogen
continues at the surface, until such time as the pressure of the dissolved
nitrogen has returned to its normal surface pressure. Correct Answer -
true
Dive tables and dive computers assist a diver in managing nitrogen levels and
thus assist in minimizing the risk of: Correct Answer - decompression
sickness
Because the tissues of the body have varying characteristics, divers use dive
tables and ______ to calculate safe dive limits and nitrogen supersaturation.
Correct Answer - personal dive computers
When a diver remains at a given depth for a period that extends beyond the
parameters established by his table or computer, he risks exceeding the
tolerance limits of __________. Correct Answer - super saturation
in such case, some of the dissolved nitrogen may come out of solution and
return to its gaseous state while still within the tissues and blood, forming
Solutions
Air is comprised of 21% Oxygen and ___________ % Nitrogen. Correct Answer
- Air is comprised of approximately 21% Oxygen and 79% Nitrogen
Nitrox has more ____________ than air. Correct Answer - oxygen -> nitrox is
a special mix that contains more than 21% Oxygen
True or False
EAN stands for enriched air nitrox Correct Answer - True
other abreviations are EANx
EAN32 contains 32% of ____________? Correct Answer - oxygen
True or false: the TDI Nitrox course includes using nitrox mixes from EAN22
to EAN40. Correct Answer - True, this course only addresses the use of
22-40% Oxygen
True or false: Nitrox offers several advantages, without any added risk.
Correct Answer - False, nitrox has added risks with breathing too much
Oxygen and getting oxygen poisoning.
True or false: Pressure is the force, or weight, pressing upon a diver, an object,
or a gas. Correct Answer - true
_______________ bar/atm is equivalent to one kilogram per square centimeter/
14.7 psi per square inch. Correct Answer - at the surface, a person
experiences the weight od the Earth's atmosphere pressing downward. in the
metric system, this weight is defined as one barometric unit.
Every 10m/33ft in depth exerts _______ bar/atm in additional pressure.
Correct Answer - 1
At 30m/99 ft, the ambient pressure is _________ bar/atm Correct Answer -
4
,Boyle's law has no effect on any gas contained within a sealed rigid container,
such as a: Correct Answer - scuba cylinder, and thus the air within the
cylinder is not impacted by the principal of Boyle's law so long as it remains
inside the cylinder.
True or False" The most important issue related to Boyle's law is that the
pressure of the breathing gas, inside a diver's lungs during a dive, will be 50%
less than the ambient pressure surrounding the diver. Correct Answer -
the pressure of the breathing gas inside the diver's lungs during a dive, will be
equal to the ambient pressure surrounding the diver
True or False: Within a gas mixture, the specific pressure of an individual gas
is referred to as the partial pressure of the gas. Correct Answer - true
A gas will always flow from an area of __________ partial pressure to an area of
_________ partial pressure. Correct Answer - From Dalton's research, he
found that a confined gas will spread evenly throughout all available
space(moving from an area of high partial pressure to an area of low partial
pressure, to equalize with any area of lower partial pressure); in the process,
it will effectively co-mingle with all other gases confined within that space,
resulting in a uniform mixture irrespective of any individual partial pressures.
At 20m/66ft the partial pressure of oxygen, in air, is ______ bar/atm. Correct
Answer - 0.63
The diver will be assured that a uniform breathing mix will be delivered from
his cylinder, through his _______, regardless of the components within the mix.
Correct Answer - because gases spread evenly and co-mingle within any
given space, the diver will be assured that a uniform breathing mix will be
delivered from his cylinder, through his regulator, regardless of the
components within the mix.
_________________ examined the solubility of gases in liquids, and discovered that
the specific quantity (mass) of a gas, which will be dissolved into a liquid, is
dependent upon two factors: (1) the partial pressure of the gas; and (2) the
coefficient of that gas in a particular liquid. Correct Answer - William
Henry
, True or False: when a significant or rapid increase in pressure is exerted upon
a liquid it may cause some of the dissolved inert gas to come out of solution.
Correct Answer - False
when a significant or rapid decrease in pressure is exerted upon a liquid it
may cause some of the dissolved inert gas to come out of solution, creating
bubbles
True or false: When the partial pressure of a gas is higher in the lungs than the
same gas dissolved in the blood, additional gas will pass through the alveoli
into the blood Correct Answer - True
true or false: when tissues have absorbed all of the nitrogen that is possible at
a given ambient pressure, the tissues are considered to be de-saturated
Correct Answer - false, they are saturated
true or false: Because of the pressure gradient when descending the diver
must begin on-gassng additional nitrogen Correct Answer - true
Because of the varying characteristics of tissues themselves, different tissues
will absorb nitrogen at different ___________. Correct Answer - rates
True or False: After a dive, the process of off-gassing the additional nitrogen
continues at the surface, until such time as the pressure of the dissolved
nitrogen has returned to its normal surface pressure. Correct Answer -
true
Dive tables and dive computers assist a diver in managing nitrogen levels and
thus assist in minimizing the risk of: Correct Answer - decompression
sickness
Because the tissues of the body have varying characteristics, divers use dive
tables and ______ to calculate safe dive limits and nitrogen supersaturation.
Correct Answer - personal dive computers
When a diver remains at a given depth for a period that extends beyond the
parameters established by his table or computer, he risks exceeding the
tolerance limits of __________. Correct Answer - super saturation
in such case, some of the dissolved nitrogen may come out of solution and
return to its gaseous state while still within the tissues and blood, forming
