The natural gas in a storage reservoir, under a pressure of 1.00 atmosphere, has a volume of 2.74 × 109 l at 20.0°c. the temperature at a later date falls to –20.0°c, but the pressure remains constant. calculate the volume that the gas now occupies

Answer : The final volume of gas will be,

Explanation :

Charles' Law : It is defined as the volume of gas is directly proportional to the temperature of the gas at constant pressure and number of moles.

or,

where,

= initial volume of gas =

= final volume of gas = ?

= initial temperature of gas =

= final temperature of gas =

Now put all the given values in the above formula, we get the final volume of the gas.

Therefore, the final volume of gas will be,

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.