Monday, June 11, 2012
Surfing For How Many Molecules Of Air Are In A Room?
George asks…How many air molecules are in a room?How many air molecules are in a 12.0 times 12.0 times 10.0ft room? Assume atmospheric pressure of 1.00atm, a room temperature of 20.0C, and ideal behavior.Nancy answers:Start by converting your units of feet to units of meters. 12.0 ft x (12 in / ft) x (2.54 cm / in) = 365.76 cm (sig figs to 366). 10.0 ft x (12 in / ft) x (2.54 cm / in) = 304.8 cm (305 with sig figs). Now for the volume of the room, multiply your lengths... 3.05 m x 3.05 m x
