How much oxygen would be saved if everyone didn't breathe for just 10 seconds a day?

Question: I read somewhere that humans use 19 cubic feet of air a day, so what if people started to hold their breath just 10 seconds once a day? How much oxygen would we save?

Answers:
Actually, none. Oxygen is conserved. Although most of the oxygen changes from O2 to CO2, no oxygen is lost.

Maybe you mean, "how much oxygen is consumed by humans every 10 seconds?"

Good question. You would need to:

1) determine the average amount of oxygen a typical person breathes every 10 seconds. It needs to be an average since babies and adults breath different amounts.

2) determine how many people there are on the planet.

3) multiply #1 times #2.

Based on your fact of 19 cubic feet of air per day (by the way, most scientific calculations use the metric system so I will convert some other facts from the metric system into cubic feet):

Air at "normal temperature and pressure" weighs about 0.0783 pounds per cubic foot.

21% of air is oxygen.

There are 24*60*60=86,400 seconds per day.

So, check my math to make certain I do this right:

19 cubic feet per day * 0.0783 lb air/cubic foot = 1.4877 pounds of air per day.

1.4877 lb air per day / 86400 sec/day = 0.0000172 lb air/sec.

Air is about 21% oxygen. Assuming this is by weight then:

0.0000172 lb air/sec * 21% = 0.00000362 pounds of oxygen per second

0.00000362 pounds of oxygen/sec * 10 seconds = 0.0000362 pounds of oxygen every 10 seconds.

Now, how many people are their in the world? 6.5 billion close enough?

6,500,000,000 people * 0.0000362 pounds of oxygen every 10 seconds = about 235,000 pounds of oxygen.

Wow! If you enjoy this type of thing then consider studying Chemistry.

Other Answers:
more than likely none for when you do breath after holding your breath you inhale deeper, so you counteract the intent to start with.

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