Question

Weather balloon is filled with 62.3 L of helium gas at 760 mm of Hg after being released the volume increases to 130 L as the balloon rises, what is the pressure at this new altitude?

Answer 1

Answer : The pressure at this new altitude is, 364.2 mmHg

Explanation :

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

`P\propto (1)/(V)`

or,

`P_1V_1=P_2V_2`

where,

`P_1` = initial pressure = 760 mmHg

`P_2` = final pressure = ?

`V_1` = initial volume = 62.3 L

`V_2` = final volume = 130 L

Now put all the given values in the above equation, we get:

`760mmHg* 62.3L=P_2* 130L`

`P_2=364.2mmHg`

Thus, the pressure at this new altitude is, 364.2 mmHg