The density of air under ordinary conditions at 25°c is 1.19 g/l. how many kilograms of air are in a room that measures 10.0 ft × 11.0 ft and has an 10.0 ft ceiling? 1 in = 2.54 cm (exactly); 1 l = 103 cm3.

There are 37 kg of air in the room.

Explanation:

To calculate the volume of cuboid (room), we use the equation:

where,

V = volume of cuboid

l = length of room = 11 ft

b = breadth of room =  10 ft

h = height of room= 10 ft

Putting values in above equation, we get:

 (Conversion factor:

To calculate mass of a substance, we use the equation:

We are given:

Density of air = 1.19 g/L

Volume of air = volume of room =  31130 L

Putting values in above equation, we get:

   (1kg=1000g)

Hence, the mass of air is 37 kg.

im not exactly sure but i think its b!