High School

What is the partial pressure of oxygen in the atmosphere, given that the atmospheric pressure on a certain day is 99.8 kPa and its percent abundance in the atmosphere is 21%?

A) 20.97 kPa
B) 79.83 kPa
C) 21.00 kPa
D) 78.00 kPa

Answer :

Final answer:

The partial pressure of oxygen in the atmosphere can be calculated using the formula P = (Patm) X (percent content in mixture). Given that the atmospheric pressure is 99.8 kPa and the percent abundance of oxygen is 21%, the partial pressure of oxygen is 20.97 kPa.

Explanation:

The partial pressure of oxygen in the atmosphere can be calculated using the formula P = (Patm) X (percent content in mixture).

Given that the atmospheric pressure is 99.8 kPa and the percent abundance of oxygen is 21%, the partial pressure of oxygen is:

(99.8 kPa) * (0.21) = 20.97 kPa

Therefore, the correct answer is option A) 20.97 kPa.

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