객관식
A container holds a mixture of helium (He) and neon (Ne) gases at a total pressure of 2.0 atm. If the mole fraction of He is 0.25 and the mole fraction of Ne is 0.75, what are the partial pressures of He and Ne, respectively?
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7. Gases
Partial Pressure
Multiple Choice
Which of the following is a typical value for the systemic tissue partial pressure of carbon dioxide (CO_2) in mmHg?
A
100 mmHg
B
23 mmHg
C
46 mmHg
D
75 mmHg
검증된 단계별 안내1
Understand that the systemic tissue partial pressure of carbon dioxide (CO_2) refers to the pressure exerted by CO_2 in the tissues after it has been produced by cellular metabolism and before it is transported back to the lungs.
Recall typical physiological values: arterial blood usually has a CO_2 partial pressure around 40 mmHg, while venous blood, which reflects tissue conditions, has a higher CO_2 partial pressure due to CO_2 release from cells.
Recognize that the systemic tissue partial pressure of CO_2 is generally higher than arterial blood but lower than the maximum possible pressure, often around 45-46 mmHg.
Compare the given options (100 mmHg, 23 mmHg, 46 mmHg, 75 mmHg) to typical physiological ranges, noting that 46 mmHg fits well within the expected range for tissue CO_2 partial pressure.
Conclude that 46 mmHg is the typical value for systemic tissue partial pressure of CO_2 based on physiological data and understanding of gas exchange.
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