Question

If, as is typical, each of them breathes about 500 cm3 of air with each breath, approximately what volume of air (in cubic meters) do these astronauts breathe in a year? if, as is typical, each of them breathes about 500 of air with each breath, approximately what volume of air (in cubic meters) do these astronauts breathe in a year?

Answer 1

Volume of brethe consumed in a normal breathe is known to be tidal volume. The tidal volume of a person is 500 mL. There are 12 times a person can breathe in a minute.

Number of breathes in a minute $= 12 breathe$

Consumption of air per brethe $= 500 mL$

Consumption of air per minute = $= 12 * 500 = 6 L$

Consumption of air per year $= 6 * 60 * 24 * 365 = 31.53 * 10^5 L$

Thus, 31.53 * 10^5 L of air consumed in a year by an astronaut.