Because of the relatively high altitude of antonito, colorado, the town has a normal barometric pressure of about 600 mm hg rather than 760 mm hg as at sea level. the partial pressure of o2in antonito’s air is approximately mm hg. a. 75.b. 126.c. 160.d. 76.e. 21.

126 mm Hg

Explanation:

the percentage by volume of oxygen in the air is 21%. Therefore it also contributes to the 21% of the total barometric pressure of the air.

Now, 21% of 600 mm Hg

=21/100*600= 126mm Hg

therefore The partial pressure of O2in Antonito’s air is approximately is 126 mm of Hg.

The correct answer is option b. 126

Explanation:

Hi! Let's solve this!

We have 21% oxygen in the air, the rest is mostly nitrogen (78%) and the remaining 5 are other gases. So:

The partial pressure of oxygen is 21% of 600 mmHg.

That is calculated as follows:

ppO2 = 600 * 21/100 = 126 mmHg

We conclude that the correct answer is option b. 126