If unit area of grain boundary advances a distance 4mm, the number of – McqOptions

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1.	If unit area of grain boundary advances a distance 4mm, the number of moles of material that enter in the grain B is 4* (1/ 8(mm³/mol)) and the free energy released is given by_______ ( G =10kJ/mol)
A.	5 kJ/mol*mm<sup>2</sup>
B.	20 kJ/mol*mm<sup>2</sup>
C.	10 kJ/mol*mm<sup>2</sup>
D.	40 kJ/mol*mm<sup>2</sup>
Answer» B. 20 kJ/mol*mm<sup>2</sup>

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