The initial gauge pressure of hydrogen contained in a cylinder of volume 50 litres is 20atm and its initial temperature is `30^(@)C`. Afte some hydrogen is withdrawn from the cylinder, the gauge pressure drops to 15 atom and its temperature drops to `25^(@)C`. Find the mass of hydrogen flown out of the cylinder.

Explanation

To solve the problem of finding the mass of hydrogen that has flown out of the cylinder, we will use the ideal gas law, which is given by the equation:

\[ PV = nRT \]

Where:
- \( P \) = pressure (in Pascals)
- \( V \) = volume (in cubic meters)
- \( n \) = number of moles
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