A flask containing air (open to atmosphere) isheated from 300 K to 500

1.	A flask containing air (open to atmosphere) isheated from 300 K to 500 K. Then percentage ofair escaped to the atmosphere is(1) 20(3) 6010. Wh(2) 40(4) 80
Answer» Assume the flask to have a volume of 1L Since the pressure is kept constant, we have, V1/T1 =V2/T2 V1 = 1L and T1 = 300K, T2 = 500K Therefore V2 = 500/300 =1.66 L i.e. the gas has expanded. Since the volume of the flask can contain only 1L of air the remaining 0.66 L will escape i.e 39.75 % 40% the atmosphere doesn't get heated

A flask containing air (open to atmosphere) isheated from 300 K to 500 K. Then percentage ofair escaped to the atmosphere is(1) 20(3) 6010. Wh(2) 40(4) 80

Answer»

Assume the flask to have a volume of 1L

Since the pressure is kept constant,

we have, V1/T1 =V2/T2

V1 = 1L and T1 = 300K, T2 = 500K

Therefore V2 = 500/300 =1.66 L i.e. the gas has expanded.

Since the volume of the flask can contain only 1L of air the remaining 0.66 L will escape i.e 39.75 %

40%

the atmosphere doesn't get heated