It is required to reduce the volume of gas by 20% by compressing it at a constant pressure. To do so, the gas has to be cooled. If the gas attains a final temperature of 157^°C, find the initial temperature of the gas.

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It is required to reduce the volume of a gas by 20% by compressing it at a constant pressure. To do so the gas has to be cooled. If the gas attains a final temperature of 157 degrees C, find the initial temperature of the gas.

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