The density of air in a mountain resort cabin at 298 K is found to be 0.976 g/L. ?

Question

What is the mass, in kilograms, of the air in a room that measures 10.2 x 16.0 x 8.00 ft.?

Answer example: 3.45e3

Answer 1

10.2 x 16.0 x 8.00 ft. = 1305.6 cu ft

1305.6 cu ft @ 28.32 litres / cu ft = 36 970 liter

36 970 liter @ 0.976 g/litre = 36,083 grams

your answer is: 36.0 kilograms,   (aka 3.60e1 kg)

  

Answer 2

Mass=Density X Volume

M= .976g/L*1305.6L

The unit Liters cancels out leaving you w/grams

1274.26 or 1.28e3