Sandy asks…How many air molecules are in a 15.0 x 12.0 x10.0ft room?Assume atmospheric pressure of 1.00 atm, a room temperature of 20.0 degree C, and ideal behavior.Nancy answers:V = (15)(12)(10) = 1800 ft3 = 50.97 m3
n = /
p = pressure 1 atm = 101 325 Pa
v = volume 50.97 m3
R = 8.314 472 m3-Pa/K/mol
T = 273.15 + 20 = 293.15K
n = air calculated 2 118.88 mol
avogadro number 6.022E +23 molecules/mol
number of molecules = (6.022E +23)(2 118.88) = 1.276E +27Mandy asks…How many molecules
