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HBO CHT EXAM QUESTIONS AND ANSWERS
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HBO CHT EXAM QUESTIONS AND ANSWERS
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HBO CHT EXAM QUESTIONS AND ANSWERSPressure is defined as? - Answers -The force per unit area acting on a surface in a
direction perpendicular to that surface
Force is defined as? - Answers -An External cause responsible for any change of
physical system.
Acceleration is defined as? - Answers -The rate of change (or time derivative) of
velocity.
Gas is defined as? - Answers -A phase of matter
Solid is defined as? - Answers -A liquid that is at its freezing point.
Plasma is defined as? - Answers -Atoms or molecules that have become ionized.
Liquid is defined as? - Answers -A solid that is at its melting point
In the gas phase, the atoms or molecules basically move? - Answers -Randomly
Liquids change to a gas at? - Answers -Their respective boiling points! Think about
water turning to steam when it boils
When applying Boyle's law to the human body, we worry about air-filled spaces being
shrunk ( or squeezed) when pressure around the body increases. This is known as? -
Answers -Barotrauma
Boyle's law equation? - Answers -P1 x V1=P2 xV2
Charles law is about the? - Answers -Temperature-volume relationship, With pressure
constant, the volume of a gas is directly proportional to the temperature.
According to Charles' law, the volume in a flexible container, like a balloon, will _____
when the temperature increases. - Answers -Increase proportionally.
According to Charles' law, the volume in a flexible container, like a balloon, will _____
when the volume increases. - Answers -Increase proportionally.
Gay-Lussac's law is about the? - Answers -Temperature-pressure relationship, Law
says that with volume constant, the temperature of a gas is directly proportional to the
pressure
According to Gay-Lussac's law, the temperature in a rigid container, like a scuba tank or
a hyperbaric chamber, will ________ when the pressure increases. (assuming the
volume remains constant). - Answers -Increase proportionally.
, According to Gay-Lussac's law, the temperature in a rigid container, like a scuba tank or
a hyperbaric chamber, will ________ when the pressure decreases. (assuming the
volume remains constant). - Answers -decrease proportionally
Gay-Lussac's law (in the hyperbaric chamber) is important to understand because when
we start increasing the pressure in the chamber, the patient is likely to complain about it
- Answers -being hot
Gay-Lussac's law (in the hyperbaric chamber) is important to understand because when
we start decreasing the pressure in the chamber, the patient is likely to complain about
it - Answers -being cold
"adiabatic heating" and "adiabatic cooling" refer to? - Answers -The temperature rise
and temperature drop when chamber pressure changes
Gay-Lussac's law (in scuba diving) is important to understand because when we start
increasing the pressure in a scuba tank (during a refill at the scuba shop), the tank will
get ____ during the refill, then ____ while it sits at room temperature. This will cause the
pressure of gas in the cylinder to________. - Answers -Warmer; cool; decrease
Gay-Lussac's law (in scuba diving) is important to understand because when we let a
full scuba cylinder lay in the sun and heat up, the pressure in the tank will ________.
this could potentially cause ______ - Answers -Increase; the scuba cylinder to rupture.
When working mathematical problems involving Charles' law or gay-Lussac's law, it is
necessary to convert the temperature from Celsius to ______. To do this, you _______.
- Answers -Kelvin; add 273 degrees
When working mathematical problems involving Charles' law or gay-Lussac's law, it is
necessary to convert the temperature from Fahrenheit to ______. To do this, you
_______. - Answers -Rankine; add 460 degrees
Henry's law is about? - Answers -Gas in solution; the amount of a gas dissolved in a
liquid is directly proportional to the partial pressure of the dissolved gas.
A common example of Henry's law is? - Answers -A newly opened bottle of soda;
Notice how the gas comes out of the solution and forms bubbles when you loosen the
lid.
Henry's law is involved in: - Answers -Oxygen toxicity, Nitrogen narcosis,
Decompression sickness (not increased intracranial pressure)
The famous study that used the theory behind Henry's law to keep pigs alive by
dissolving oxygen in the plasma of the blood after all red blood cells had been removed
was done by? - Answers -Boerema in 1960 Think Boer for pig study!
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