As a respiratory specialist, I can provide you with an informed answer to your question. The human respiratory system is designed to take in oxygen and expel carbon dioxide, which is crucial for cellular respiration and overall health. To calculate the amount of oxygen a person breathes in a day, we can use the following information and calculations: 1. The average person breathes 8 liters of air per minute. 2. Air is composed of approximately 20% oxygen. 3. When we exhale, the air we breathe out is about 15% oxygen, which means we have taken in and utilized about 5% of the oxygen from the air we inhaled. Given these points, we can estimate the daily oxygen intake as follows: - If a person breathes 8 liters of air per minute, and there is 20% oxygen in the air, they are inhaling 1.6 liters of oxygen per minute (8 liters * 20%). - Over the course of a day (24 hours), this amounts to 1.6 liters/minute * 60 minutes/hour * 24 hours/day = 2304 liters of oxygen inhaled. - However, since we only consume about 5% of the oxygen with each breath, we need to adjust this figure to account for the oxygen that is exhaled. - The actual amount of oxygen consumed is therefore 5% of the 2304 liters, which is 115.2 liters. So, a person consumes approximately 115.2 liters of pure oxygen each day. read more >>

A person breathes 7 or 8 liters of air per minute. Air is about 20% oxygen. But when you exhale, your breath is about 15% oxygen, so you consumed about 5%. Therefore, a person uses about 550 liters of pure oxygen each day.read more >>