 
			 
			MCQOPTIONS
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				| 1. | For an open unsteady state system, 10 J of heat was supplied and 10 J of work was done by the system, what is the value of a change in enthalpy? | 
| A. | 0 | 
| B. | 10 J | 
| C. | 20 J | 
| D. | – 20 J | 
| Answer» B. 10 J | |