Oxygen is filled in a closed metal jar of volume `1.0xx10^(-3)m^(3)` at a pressure of `1.5xx10^(5)Pa.` and temperature 400K.The jar has a small leak in it. The atmospheric pressure is `1.0xx10^(5)`Pa and the atmospheric temperature is 300K. Find the mass of the gas that leaks out by time the pressure and the temperature inside the jar equlise with the surrounding.

Explanation

To solve the problem of finding the mass of oxygen that leaks out of the jar when the pressure and temperature inside the jar equalize with the surroundings, we can follow these steps:

### Step 1: Calculate the initial number of moles of oxygen (n1)
We can use the ideal gas equation, which is given by:

\[ PV = nRT \]

Where:
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