Physics and Chemistry- Humidification Flashcards Preview

► Med Misc 44 > Physics and Chemistry- Humidification > Flashcards

Flashcards in Physics and Chemistry- Humidification Deck (11)
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1
Q

what is the term for the mass of water vapor in a given volume of air

A

Absolute humidity

2
Q

what is the term for a ratio of the actual amount of water vapor in the air at a given temp to the maximum amount of water vapor that the air can hold at that temp

A

relative humidity

3
Q

what is the formula for relative humidity?

A

RH% = (Actual VP / Saturated VP) x 100%

4
Q

what happens to relative humidity as temp falls, bc saturated VP falls

A

Relative humidity increases

5
Q

Inspired gas is quickly humidified to what % (relative humidity) when breathing through he nose?

A

100%

6
Q

air is saturated with what by the time it reaches the trachea?

A

H2O

7
Q

what is the partial Pressure of saturated water vapor at 37 C?

A

47mmHg

8
Q

what are the soda lime canisters made up of

A

CaOH2
NaOH
KOH

9
Q

what is the largest component on the soda lime canister

A

Ca(OH)2

make up 94%

10
Q

what is the size of the soda lime granules?

A

4-8 mesh

11
Q

in the soda lime canister what is added to increase the hardness and reduce dust

A

silica

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