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				| 1. | An 80 litre vessel contains 4 kg of R-134a at a pressure of 160 kPa. Determine the volume occupied by the vapour phase. | 
| A. | 0.0775 m3 | 
| B. | 0.0575 m3 | 
| C. | 0.0975 m3 | 
| D. | 0.0375 m3 | 
| Answer» B. 0.0575 m3 | |