Chem and Physics

Question 1

Ionic bonds common with?

Answer 1

metals and acids bases

Question 2

covalent bond what happens with electrons?

Answer 2

electron sharing

Question 3

bond strength from strong to weak

Answer 3

covalent > ionic > polar covalent (hydrogen) > van-der-walls

Question 4

daltons law

Answer 4

P1 + P2 + P3 = Ptotal

Question 5

Henry’s law

Answer 5

at a constant temp, amount of gas that dissolves into a solution is directly proportional to partial pressure of gas over the solution

Question 6

list some clincal applications of henry’s law

Answer 6

prolonged emergence from hypothermia (decreased temp > ^ solubility)

overpressuring the vaporizer
^FiO2>^PaO2

hyperbaric oxygen chamber

Question 7

Ficks Law

Answer 7

has to do with the transfer of gas through a medium

Question 8

clincial application of ficks law

Answer 8

CO calculation
placental drug transfer
diffusion hypoxia

Question 9

Grahms Law

Answer 9

gas’s molecular weight determines how fast ait can diffuse through a membrane. smaller mollecules diffuse faster

Question 10

clinal application of grahms law

Answer 10

2nd gas effect

Question 11

CO2 is how many time more soluble than O2 in the blood

Answer 11

20x

Question 12

O2 solubility coeficient

Answer 12

0.003 ml/dL/mmHg

Question 13

CO2 solubility coeficient

Answer 13

0.067ml/dL/mmHg

Question 14

ideal gas law

Answer 14

PV=nRT

r=0.0821

Question 15

transitional flow reynolds number adn how flow is throughout the vessel

Answer 15

2,000-4,000

turbulent flow in the center
laminar flow near the walls of the tube

Question 16

Bournoulli’s Principle

Answer 16

relationship between pressure and velocity.

high velocity = low pressure on walls of tube
low velocity = high pressure on walls of tube

Question 17

Venturi effect

Answer 17

an application of Bournoullis principle

pressure @ constriction decreases. if pressure drops below atmospheric pressure than air is entrained.

Question 18

clinical applications of the venturi effect

Answer 18

jet ventilator
venturi mask
nebulizer

Question 19

Coanda effect

Answer 19

when a jet flow attaches itself to a nearby surface adn flows along it even whwen the surface curves away from the initial jet direction

Question 20

clinical example of the coanda effect

Answer 20

wall hugging jet of mitral regurg

Question 21

law of laplace

Answer 21

sphere surface tension = (P x R)/2

cylinder surface tension = P x R

Question 22

tension in law of la place

Answer 22

pulling force keeping walls together

Question 23

heart wall stress formula

Answer 23

wall stress = (interventricular pressure x radius) / (2 x ventricular thickness)

Question 24

radiation follows what law

Answer 24

inverse square law

Question 25

annual radiation limits

Answer 25

5Rem 0.5Rem if pregnant

Question 26

what part of the body is most succeptible to injury from radiation?

Answer 26

eyes and thyroid fetus if pregnant

Question 27

what is an adiabatic process?

Answer 27

rapid expansion or copmression of gas with no change in energry

Question 28

joule thompson effect

Answer 28

an adiabatic process. Explains why an O2 tank oppend quickly feels cool

Question 29

what is critical temperature

Answer 29

highest temp where a gas can exist as a liquid

Question 30

what is critical pressure

Answer 30

minimum pressure required to convert gas to liquid at critical temp

Question 31

how ot convert C to Kelvin

Answer 31

K=C+273

Question 32

what is the pressure in an empty tank at sea level?

Answer 32

760

Question 33

laminar flow depends mostly on?

Answer 33

viscosity

Question 34

turbulent flow depends mostly on?

Answer 34

density

Question 35

reynolds number is inversly proportional to?

Answer 35

viscosity

Question 36

waht two laws make up ficks law?

Answer 36

henry and grahm

Question 37

what gasses are liquid in cylinder at room temp?

Answer 37

CO2 N20 not nitrogen