Question

The dimensions of a hall are 10m, 7m and 5m. The density of air of 0.0011 g/cm3.
Find the mass of the air inside the hall.​

Answer 1

Answer:

Mass = 3.1 × 10^-15 g (approx.)

Explanation:

Since, Density = Mass / Volume

Therefore, Mass = Density × Volume

And since, Volume = L × B × H

So, V. = (10 × 7 × 5) m^3

=> V. = 350 m^3

=> V. = (350 × 10^9) cm^3

=> V. = (35 × 10^10) cm^3

So, Mass = [ 0.0011 / (35 × 10^10) ] g

=> Mass = [ (11 / 35) × (1 / 10^14) ] g

=> Mass = [ 0.31 × (1 / 10^14) ] g {approx.}

=> Mass = 0.31 / 10^14 g (approx.)

=> Mass = 0.31 × 10^-14 g (approx.)

=> Mass = 3.1 × 10^-15 g (approx.)

Hope it helps u !!!!!!!