A very long thin straw is given. A barometer reads 740 torr. The total pressure was 6.91 atm. It took 64 sec for an unknown gas to effuse, whereas N 2 required 48 sec. In what season air molecules bombard onto your skin at an RMS velocity of ca.
Human skin is a speedometer for the gases.
We human breathe 12 times a minute. During each breath 500mL of air is taken to the lung and exhaled. How many moles of O 2 are present in 500 mL of inhaled air at 25 o C and 1.0 atm. You may assume that volume of the breads is mostly that of CO 2 . Then estimate total kinetic energy of all air molecules in this room.