If atmospheric pressure on a certain day is 749 mmHg, what is the partial pressure of nitrogen, given that nitrogen is about 78% of the atmosphere?

Question

Quizplus · Accepted Answer

Since nitrogen is about 78% of the atmosphere, the partial pressure of nitrogen can be calculated by multiplying the atmospheric pressure by its percentage in the atmosphere:
Partial pressure of nitrogen = 0.78 x 749 mmHg = 584.22 mmHg, which can be rounded to 584 mmHg. Therefore, the correct answer is choice B.

If Atmospheric Pressure on a Certain Day Is 749 MmHg