gas laws2

Question 1

kinetic molecular theory of gases assumes that

Answer 1

the molecules are very small relative to the distance between molecules. the molecules are in constant, random motion and frequently collide with each other and with the walls of any container

Question 2

the density of a gas is

Answer 2

the sum of the mass of the molecules divided by the volume which the gas occupies

Question 3

the pressure of a gas is

Answer 3

a measure of the linear momentum of the molecules.

Question 4

force divided by area is

Answer 4

pressure

Question 5

temperature is a measure of

Answer 5

mean kinetic energy of the gas

Question 6

the higher the temp, the ___ the motion

Answer 6

greater

Question 7

kinetic energy + potential energy =

Answer 7

internal energy

Question 8

temp is ___ proportional to average KE

Answer 8

directly

Question 9

the ___ is the same for gases at the same temp

Answer 9

average KE

Question 10

grahams law of effusion

Answer 10

the rate of effusion is inversely proportional to the square root of the molecular mass

Question 11

effusion and ___ are substantially the same process

Answer 11

diffusion

Question 12

effusion is

Answer 12

the movement of a gas through a small opening

Question 13

the rate of effusion depends on ___ of molecules

Answer 13

speed

Question 14

ficks law

Answer 14

rate of diffusion of gas across a permeable membrane is determined by the chemical nature of the membrane itself, the surface area of the membrane, the partial pressure gradient of the gas across the membrane.. the thickness of the membrane

Question 15

diffusion rate of gas is directly proportional to

Answer 15

partial pressure gradient, membrane area, solubility of gas in membrane

Question 16

diffusion rate is inversely proportional to

Answer 16

membrane thickness, the square root of the molecular weight

Question 17

ficks law

Answer 17

diffusion limited gas exchange

Question 18

what is diffusion limited gas exchange

Answer 18

the rate at which gas is transported away from functioning alveoli and into tissues is principally limited by the diffusion rate of the gas across the alveolar membrane

Question 19

the partial pressure of nitrous oxide equilibrates ____

Answer 19

rapidly

Question 20

enhancing the diffusion rate of the gas across the alveolar membrane has what effect on the blood transport rate of nitrous away from the lungs?

Answer 20

none - there is a limiting factor- perfusion limitation. simply the rate of blood flow thru the pulmonary capillaries

Question 21

4 things ficks law is applied to

Answer 21

concentration effect, second gas effect, diffusion hypoxia, why N20 leads increase in volume or increase in pressure in gas spaces in the body

Question 22

even though CO2 is larger than O2, CO2 diffuses 20x faster across the alveolar and capillary membranes. why?

Answer 22

because its 20x more SOLUBLE

Question 23

the process by which the fetus receives 02 and drugs is simply

Answer 23

diffusion across a membrane

Question 24

henrys law

Answer 24

the amt of non reacting gas which dissolves in liquid is directly proportional to the partial pressure of the gas, provided the temp remains constant

Question 25

as the partial pressure of a gas increases , the amt that dissolves in liquid

Answer 25

increases

Question 26

the colder the liquid, the ___ gas will dissolve in the liquid

Answer 26

more

Question 27

amount of gas dissolved is ____ proportional to the temp

Answer 27

inversely

Question 28

ostwalds solubility - the higher the coefficient, the ___ readily the gas dissolves in the liquid

Answer 28

more

Question 29

ostwalds solubility coefficient is for which interface

Answer 29

blood:gas

Question 30

a gas with a ____ blood gas coefficient will require uptake of gas into the blood and induction will be slower

Answer 30

higher

Question 31

high solubility = ___ onset

Answer 31

slower

Question 32

higher partition coefficient = ____ lipophilicity = ___ potency = ____ solubility

Answer 32

higher higher higher

Question 33

MAC ___ as blood gas partition coefficient increases

Answer 33

decreases

Question 34

meyer-overton

Answer 34

agents with increased oil solubility have greater potency

Question 35

ideal gases obey gas laws at

Answer 35

all temps/ pressures…. there are no ideal gases

Question 36

real gases deviate at ___ pressure and ___ temps

Answer 36

high, low

Question 37

who’s equation assumes that gas molecules have finite volumes and gas molecules attract one another

Answer 37

vänder waal

Question 38

joeule-thompson effect

Answer 38

involves a temperature change in a gas as a result of a sudden pressure change over a valve. from high pressure to low pressure, causes cooling

Question 39

adiabatic compression

Answer 39

compression in which no heat is added to or subtracted from the air and the internal energy of the air is increased by an amt equivalent to the work done on air.

Question 40

adiabatic compression - the increase in temperature of the air tends to increase the pressure on account of the _____

Answer 40

decrease in volume alone