How do I calculate air mass of a room?

Question

The density of air is approx 1.19g/L

The room is 4.40m x 3.50m x 2.75m

Now I understand that I need to calculate the volume.

I am not sure how to calculate the 1.19g/L with the volume?

Do I need to convert the 1.19g/L to kg? I really have no idea?

Answer 1

every cubic meter of volume contains 1000l right, so cubicmeters by 1000 give volume in liters, every liter weighs 1,19g,just multiply.:))

Answer 2

Volume of room=4.40m x 3.50m x 2.75m=42.35 m3

now change it into cubic centimeters by multiplying by 1 000 000 (1m=100 cm)

= 42,350,000 cc

1000 cc=1 liter

so

=42350 liters

mass=density*volume

=1.19*42,350

=50,396.5 g

=50.3965 Kg  

Answer 3

Figure out the cubic meters of the room and multiply that by the mass of a cubic meter of air.

Answer 4

The mass of a substance is equal to its density multiplied by its volume.

1L is defined to be exactly 1 dm^3 (one cubic decimeter), so

1L = 0.1m * 0.1m * 0.1m = 0.001 m^3

1.19 g/L = 1.19 / (0.001 m^3) = 1190 g/m^3

Remember that 1kg = 1000g, so

1190 g/m^3 = 1.19 kg/m^3

The volume of the room is the product of the width, length andheight:

V = 4.40 * 3.50 * 2.75 = 42.35 m^3

So:

mass = volume * density

= 42.35 m^3 * 1.19 kg / m^3

= 50.3965

= 50.4 kg