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Oxygen gas cylinders of fixed volume are dropped off outside the nursing home in the middle of a cold winter night at a pressure of 2.5 atm and an initial temperature of 25 oC. By morning, the temperature has dropped to 2.0 oC. What is the new pressure?

Respuesta :

Answer: 2.3 atm

Explanation: solution attached.

Use Gay-Lussac's Law.

P1 / T1 = P2/T2

Convert temperatures to K

Derive to find P2

P2 = P1T2 / T1

= 2.5 atm ( 275 K ) / 298 K

= 2.3 atm

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