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An air bottle used for scuba diving breathing apparatus has a volume of 30 l. After...

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Chemistry

An air bottle used for scuba diving breathing apparatus has avolume of 30 l. After it has been used, the pressure andtemperature of the remaining air in the bottle are 0.3 MPa and 24â—¦C. Before the apparatus is used again, it is charged with air attemperature of 50 â—¦C until the pressure in the bottle reaches 6MPa. The charging processes is fast, and can be assumed to beadiabatic.

Questions: (a) Calculate the massof air to be added to the bottle.

(b) What is the temperature ofthe air in the bottle at the end of the chargingprocess?

Answer & Explanation Solved by verified expert
3.9 Ratings (778 Votes)
b After use P1 03 MPa T1 24273 297 K After charged P2 6 MPa T2 V Constant 30 L specific heat ratio of air k 75 or 14 Since the process is adiabatic and V is constant    See Answer
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