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mate25_midterm_s2010_StefanieHarvey_nid251_fid376

# mate25_midterm_s2010_StefanieHarvey_nid251_fid376 - From...

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MatE 2 5 Midterm Sprin g 2 0 1 ~ Directions 50 minutes , one oage of notes (single side . ) Closed book. Don ' t hesitate to ask questions You know this ~ m aterial. Good luck!! Possibly useful info: R (idea l gas constant ) = 8.315 J/mol-K. Feel free to use the back o f the paper for additional space . . \ 1. ( What is the maximum number of electrons that an M shell can contain? Show your work/reasoning . ( 6 points ) 1"\ -; I \L \li e (Y\ ;:;l>~"(Y)'0<h Y\uN\ ~ r ,, { c(ec+ r Dv / 5 ,:If'\ (v\ .s h e.( 1 L C ~ n \rl o l d ' 1\ 2 ~ e. \ ~ct Y o · () S , ~ , '\ ' ,-.. . z 3 :3 h -: 3 R :; 2 (I1-f : - '). , D , 1 1 '" 11 - 1 ~ ~ 2 YI1 e !' - I, D, -t- 1 2 . Identify the miller indices of the planes s;r,own in the figure below ( 4 points ) M; ( :- Z (2f .\- I ') :z ( ;2 (2) +- Ij - - 2(S} :: I D ~ ~ I /i : I 1. 5 - =7 ( ::. 3 '"0 ') \ 1 - . 3 The number o f vacancies in a hypothetica l meta l increases b y a factor of 5 when the temoeratur e is i ncr e as ed r r o rT ' 10 70 K to 1 1 8 0 K . Ca l cu l ate the ene r g y for v acancy f ormat i on ( in J/mol ) as sumi ng that th e d e nsi t y of the met a ; remainsthesameoverthi ~ te ~ peraturerange. (8 P ointS ! 1. Cp v I Yl'5t l l() )( 1 ,3~ ' ( O -'l.3) ;:. - (j)" '-lv 0 N " ,( -f T ') \' , \. 3~ ' ( 0 3 J ( c 'rdY] k..) ~ < _ \ \J (- ~ J 1 ",5 -:.

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mate25_midterm_s2010_StefanieHarvey_nid251_fid376 - From...

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