Quote (udaggod @ Oct 3 2010 10:50pm)
Oxygen intake. Air has density 1.29 at sea level and comprises about 23% oxygen by mass. Suppose an adult human breathes an average of 17 times per minute, and each breath takes in 450 of air.
a)What mass of oxygen is inhaled each day?
b)How many oxygen molecules is this? (Note:The mass of one oxygen molecule is 32 .)
need asap
Go to the store, pick me up 5. Then on your way back swing by the bank and get me 6, please.