An ideal gas, initially at a pressure of 11.2 atm and a temperature of 299 K, is allowed to expand adiabatically until its volume doubles. Required:
What is the gas’s final pressure, in atmospheres, if the gas is diatomic?

The pressure is  

Explanation:

From the question we are told that

   The initial pressure is

   The  temperature is  

Let the first volume be   Then the final volume will be  

 Generally for a diatomic  gas

Here r is the radius of the molecules which is  mathematically represented as

Where are the molar specific heat of a gas at constant pressure and  the molar specific heat of a gas at constant volume with values

=>  

=>  

=>  

=>  

change tension

massxgravity x heght=weightxheight= pe

4900=490xh

h=10