What will be the minimum pressure requir...

What will be the minimum pressure required to compress `500 "dm"^3` of air at 1 bar to 200 `dm^3` temperature remaining constant.

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According to Boyle.s law, at constant temperature,
`P_1 V_1 = P_2 V_2`
Suppose the required pressure is `P_2`.
`:. " " 1 xx 500 = P_2 xx 200`
or `P_2 = (1xx500)/200 = 2.5` bar

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