A vessel of volume `8.0xx10^(-3) m^(3)` contains an ideal gas at 300K and 200kPa. The gas is allowed to leak till the pressure falls to 125kPa. Calculate the amount of the gas (in moles) leaked assuming that the temperature remains constant.

Explanation

To solve the problem of how much gas has leaked from the vessel, 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 of gas
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