By example, your bathroom is 8'W x 10.5L which is 84sq.ft You would then multiply that by the ceiling height to get cubic feet in the room. For the purpose of this example I will assume an 8' ceiling, thus we get 84sq.ft x 8' height equals 672cubic feet. The total volume of the room in 672cu.ft and we want 4 air exchanges per hour so we would need to move 672cu.ft x 4 = 2688cu.ft per hour.
The Gobi is a large desert region in Asia covering parts of northern and northwestern China, and of southern Mongolia. The Gobi measures over 1,610 km (1,000 mi) from southwest to northeast and 800 km (497 mi) from north to south.
The Gobi Desert is situated in Mongolia and China (two east Asian states). The Gobi Desert is a largest desert in Asia which is surrounded by mountains from north to south and from east to west. It covers parts of northern and northwestern China, and of southern Mongolia.