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				| 1. | AN_INSULATED_CYLINDER_FITTED_WITH_A_PISTON_CONTAINS_R-12_AT_25¬¨ àûC_WITH_A_QUALITY_OF_90%_AND_V=45_L._THE_PISTON_MOVES_AND_THE_R-12_EXPANDS_UNTIL_IT_EXISTS_AS_SATURATED_VAPOUR._DURING_THIS,_R-12_DOES_7KJ_OF_WORK_AGAINST_THE_PISTON._DETERMINE_THE_FINAL_TEMPERATURE,_ASSUMING_THAT_THE_PROCESS_IS_ADIABATIC.?$# | 
| A. | -5°C | 
| B. | -15°C | 
| C. | -25°C | 
| D. | -35°C | 
| Answer» C. -25¬¨¬®‚Äö√†√ªC | |