Physics & Gases Flashcards

Question

Charles law

Answer 1

The volume of gas at a constant pressure increases proportionally with increased temp Temp in Kelvin V1/T1=V2/T2

Answer 2

Volume of gas is held constant the gas pressure rises as the absolute temp rises p1/t1=p2/t2

Answer 3

Absolute pressure of a gas is inversely related to the volume it occupies and directly to its Absolute temperature P1v1/t1=p2v2/t2

Answer 4

The absolute pressure of a gas mixture equals the total pressure of the system

Answer 5

Equal volumes of gas at the same pressure And temperature contain the same number of molecules 1 mole is 6.02X10^23

Answer 6

Movement of molecules from high concentration to low concentration

Answer 7

Rate of diffusion is inversely proportional to the square root of the mass or density Lower density, more diffusible gas

Answer 8

The higher the partial pressure of a gas the more it will dissolve

Answer 9

Diffusion across a semipermeable membrane - directly proportional to surface area, partial pressure gradient, solubility - indirectly proportional to GMW, thickness of membrane

Answer 10

Streamlined, small airways of lungs

Answer 11

Chaotic, large airways

Answer 12

Mixture of laminar and turbulent flow | Occurs where tubes divide

Answer 13

•Under conditions of laminar flow, the difference in pressure required to produce a given flow is defined by Poiseuille's law.

Answer 14

Describes how other factors can produce turbulent flow | Faster flow is more turbulent

Answer 15

As the forward velocity of a gas increases its lateral pressure decreases and its forward pressure increases Smaller jet more entrainment

Answer 16

The pressure drop that occurs distal to a constriction in a tube can be restored to the ore constriction pressure if there is a dilation in a tube distal to the constriction

Answer 17

If the wall does not have a side port for entraining another fluid, the low pressure adjacent to the wall draws the stream of fluid against the wall

Answer 18

``` Colorless, odorless Composed of N, O, CO2, and trace gases Nonflammable, supports combustion Gas or liquid Prepared synthetically and shipped in gas cylinders ```

Answer 19

``` Colorless, odorless, tasteless 20.9% of earths atmosphere Nonflammable,supports combustion Oil and grease are explosive near O2 Gas at room temp, prepared by fractional distillation Liquid at <-184C ```

Answer 20

Colorless, odorless Nonflammable, does not support combustion Solid -56C, liquid below 31.1C, gas above 31.1C Byproduct from ammonia, lime and kilns, combustion of coal and natural gas or fractional distillation

Answer 21

``` Colorless, odorless, tasteless Prepared from natural gas or uranium ore Inert gas Nonflammable, does not support combustion Does not support life ```

Answer 22

``` Colorless Nonflammable, supports combustion NO + air = nitrogen dioxide Can be potent irritant to the lungs NO in low doses is strong vasodilator (premie PPH) ```

Answer 23

N2O, laughing gas CNS depressant (anesthetic) Use caution with COPD & asthmatic

Answer 24

Less expensive | Gaseous oxygen occupies a volume 860 X liquid O2

Answer 25

Primary- large liquid system, refilled at reg intervals | Reserve- small liquid system or bank of cylinders, contains avg day supply

Answer 26

Two banks of cylinders when primary empties, secondary becomes primary

Answer 27

Seamless, type K or L, copper or standard wt brass, labels every 20 ft

Answer 28

Isolate areas of hospital, O2 air and vacuum | - mainline entering hospital, each riser, between each zone And mainline, critical care areas and surgical suites

Answer 29

``` Produce enriched oxygen from ATM air Semipermeable - air diffused Molecular sieve- N2 removed by pellets Less than 6lpm 92-97% 10lpm 50% ```