Question

If a room has dimensions 3 mx 4 mx 5 m, what is the mass of air in
room if density of air at NTP is 1.3 kg/m ?​

Answer 1

Answer:

volume = length× breadth×height

volume = 3×4×5

volume = 60 cubic metre

density = mass÷volume

mass = density × volume

mass = 1.3×60

mass = 78kg

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