A tank of capacity 20 litre contains air at a pressure of `4.0 xx 10^(5) Pa`. Calculate the pressure that must be applied in order that the volume is reduced to 10 litres, keeping the temperature constant.

Explanation

To solve the problem, we will use Boyle's Law, which states that for a given mass of gas at constant temperature, the product of pressure and volume is a constant. This can be expressed mathematically as:

\[ P_1 V_1 = P_2 V_2 \]

Where:
- \( P_1 \) is the initial pressure,
- \( V_1 \) is the initial volume,
- \( P_2 \) is the final pressure,
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