Multiple choice

A rigid, insulated tank is initially evacuated. The tank is connected with a supply line through which air (assumed to be ideal gas with constant, specific heat) passes at 1 MPa, 3500C. A valve connected with the supply line is opened and the tank is charged with air until the final pressure inside the tank reaches 1 MPa. The final temperature inside the tank

  1. is greater than 3500C

  2. is less than 3500C

  3. is equal to 3500C

  4. may be greater than, less than, or equal to 350C, depending on the volume of the tank
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