# Physics and Chemistry-Solubility of Gases Flashcards Preview

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Flashcards in Physics and Chemistry-Solubility of Gases Deck (11)
1
Q

who’s law permits calculation of dissolved O2 and dissolved CO2 in blood?

A

henry’s law

2
Q

Henry’s law states that the amount of gas that dissolves in a liquid is proportional to the partial pressure of the gas in the gas phase.

A

just a fact

3
Q

what is the amount of O2 that dissolves in blood?

A

0.003mL/100mL blood/mmHg

4
Q

how do u calculate the amount of O2 dissolved in blood?

A

multiply the partial pressure of O2(PaO2) by 0.003.

it’s that easy

5
Q

How much O2 is dissolved in the arterial blood when PaO2 is 300mmHg

A

300mmHg x 0.003 = 0.9ml O2/100mL blood

6
Q

How much does dissolved O2 increase in the blood when PaO2 increases from 100mmHg to 500mmHg?

A

100 x 0.003 = 0.3 mL O2/ 100mL blood
500 x 0.003 = 1.5mL O2/100mL blood
Increase = 1.2 mL O2/100mL blood

7
Q

If the inspired O2 is given, how do you estimate the PaO2?

A

Multiply the inspired concentration by 5

8
Q

How much O2 is disheveled if the FiO2 is 40%

A

40 x 5 = 200mmHg

200mmHg x 0.003 = 0.6 mLO2/100mL blood

9
Q

what is the amount of CO2 dissolved in blood?

A

0.067 mL/ 100mL blood/ mmHg

10
Q

how do you calculate the amount of CO2 that is dissolved in the blood?

A

Multiply the partial pressure of CO2 (PaCO2) by 0.067

11
Q

How much CO2 is dissolved in in the arterial blood when PaCO2 is 50mmHg

A

50 mmHg x 0.067 = 3.35 ml CO2/100mL blood