If 20 Percentof the Air Is Composed of O₂,what Is

question 207

Multiple Choice

If 20 percentof the air is composed of O₂,what is the partial pressure of oxygen at an altitude of 20,000 feet where atmospheric pressure is 350 mmHg?

• A) 20 mmHg
• B) 70 mmHg
• C) 152 mmHg
• D) 760 Hg

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Definitions:

Increased

A situation or condition in which there is a rise in quantity, size, number, or some other measure of a concept or object.

Independent Variable

The determining variable in a causal relationship.

Vertical Intercept

The vertical intercept of a graph is the point at which the curve intersects the vertical (Y) axis, often representing the starting or base value of the function when other variables are zero.

Slope

In mathematics, the measure of the steepness or incline of a line, defined as the ratio of the vertical change to the horizontal change between two points on the line.