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Directions: Additional information to complete these problems can be found in your Examination Booklet. Use 5.43g/cm3 as your density for Mercury --Given Values-- Energy for Vacancy Formation (eV/ atom ):=0.13 Metal: = Gallium Temperature (C)=779 Alloy Metal A = Platinum Alloy Metal B = Silver Metal-X = Lead Metal Y= Copper Magnification =495 ASTM Grain Size =7 Grain per Square Inches =44 1) Calculate the fraction of atom sites that are vacant for given metal and the temperature shown above. Assume an energy for vacancy formation shown above (answer in Engineering Notation): Your Answer = Incorrect. 2) For the metal given, the equilibrium number of vacancies at 600C is 11025m3. Calculate the fraction of vacancies for this metal at 600C (answer in Engineering Notation): Your Answer =5.105E22 Incorrect. 3) For an alloy that constists of 75 at\% of Alloy Metal and 25% of Alloy Metal B, what is the concentration of Alloy Metal A in wt\%? Your Answer = Incorrect. 4) For an alloy that constists of 75 at\% of Alloy Metal and 25% of Alloy Metal B, what is the concentration of Alloy Metal B in wt\%? Your Answer =[] Incorrect. Your Answer = Incorrect