breadth 3m andLength of a room is 5mheight 2.5m. If temp. of room is r

1.	breadth 3m andLength of a room is 5mheight 2.5m. If temp. of room is reaised from20°C to 25°C. Then calculate the %age ofthe initial volume of air constant pressurewhich will come out from the room?(3)(Ans. 1.706%)
Answer» initial volume of air = volume of room = 532.5 = 37.5 m³ now since pressure is constant.. so, V1/T1 = V2/T2 => 37.5/(273+20) = V2/(273+25) => V2 = 37.5(298)/(293) = 38.13m³ now, the volume of air expanded is = 38.13-37.5 = 0.64m³ so, in % it is (0.64100%)/37.5 = 1.70%

breadth 3m andLength of a room is 5mheight 2.5m. If temp. of room is reaised from20°C to 25°C. Then calculate the %age ofthe initial volume of air constant pressurewhich will come out from the room?(3)(Ans. 1.706%)

Answer»

initial volume of air = volume of room = 5*3*2.5 = 37.5 m³

now since pressure is constant..

so, V1/T1 = V2/T2

=> 37.5/(273+20) = V2/(273+25)

=> V2 = 37.5*(298)/(293) = 38.13m³

now, the volume of air expanded is = 38.13-37.5 = 0.64m³

so, in % it is (0.64*100%)/37.5 = 1.70%