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Which is the temperature of a given mass of a gas initially

Which is the temperature of a given mass of a gas initially at 0°C and 9 atm, if the pressure is reduced to 3 atm at constant volume?
  • A. 91K
  • B. 182K
  • C. 273K
  • D. 819K
Correct Answer: Option A

 

Explanation

From P1/T1 = P2/T2 = 9/273 = 3/T2
T2 x 9 = 273 x 3
T2 = (273 x 3)/9
T2 = 91K

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