Agas is contained in a thick-walled balloon. when the pressure changes from 319 mm hg to 215 mm hg, th volume changes from 0.558 l to l and the temperature changes from 115 k to 387 k.

Answer : The volume of gas will be, 2.79 L

Solution :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

where,

= initial pressure of gas = 319 mmHg

= final pressure of gas = 215 mmHg

= initial volume of gas = 0.558 L

= final volume of gas = ?

= initial temperature of gas = 115 K

= final temperature of gas = 387 K

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

Therefore, the volume of gas will be, 2.79 L