Question

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.

Answer 1

The correct answer is option b. 126

Step-by-step 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

Answer 2

126 mm Hg

Step-by-step 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.