5 dm³ of dry oxygen is allowed to expand to 7 dm³, when its pressure recorded is 700 mm of mercury. find the initial pressure of gas, assuming temperature remains constant.
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5 dm³ of dry oxygen is allowed to expand to 7 dm³, when its pressure recorded is 700 mm of mercury. find the initial pressure of gas, assuming temperature remains constant.
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Answer:
Final volume (V2) = 7 m3
Final pressure (P2) = 700 mm
Initial volume (V1) = 5m3
Initial pressure (P1) = 2 2
1
P V 700 7
V 5
× = = 980 mm of mercury
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