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4. Bài tập ôn thi học sinh giỏi hoá học 9
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6 GẮp tgỮ 8,:= ` DL= vël 4;; c` euaj eỂdg AFLG 6C vë MF[LG]= ;,8C. Uãag c bẼt tỪf tẦl tgëag. \=. Gíp tgu :,75 ` DL= vël 4;; c` euaj eỂdg AFLG 6C vë MF[LG]= ;,>C. tãag bgỖo `ƻỤaj bẼt tỪf tgu ĖƻỤd. 4. GẮp tgỮ X ` DL= vël 4;;c` euaj eỂdg MF[LG]= 6C tgu ĖƻỤd 6?,:j bẼt tỪf. Uàc X. 5. GẮp tgỮ =,877 ` DL= [Ėbtd] vël =,> ` euaj eỂdg MF[LG]= fC tgu ĖƻỤd 6>,:8j bẼt tỪf. tàc f \>. GẮp tgỮ X ` DL= vë 4;; c` euaj eỂdg MF[LG]= ;,>C vël AFLG 6C ĖƻỤd =?,>> j bẼt tỪf. Uàc X 8.GẮp tgỮ gẼt ;,6 cl` DL= vël X ` euaj eỂdg dgữf MfD`= d C vël AFLG ;,6 C. Tfu pgẤa ữaj tgu ĖƻỤd 6>,:8 j bẼt tỪf. Wæd ĖỂag X moẼt x 3 ;,6 :. Dgl X ` DL= [ Ėbtd] vël 6;; c` euaj eỂdg AFLG xC tgu ĖƻỤd euaj eỂdg W, Dgl MfD`= eƻ vël euaj eỂdg tgu ĖƻỤd ?,7>j bẼt tỪf rỔo Ėua pgẪa aƻỒd `ểd tgẮy tglæt rf =,=5` bgã. Uàc X vë _ 7. GẮp tgỮ X ` DL= vël >;; c` euaj eỂdg MF[LG]= fC vë AFLG ;,>C tgu ĖƻỤd 6?,:j bẼt tỪf rỔo Ėua aôaj pgẪa aƻỒd `ểd `Ầo tgẮy xuẮt goỊa =,?>> j bẼt tỪf. Uãag X moẼt f3 ;,=4C ?.GẮp tgỮ glëa tlëa =,=5` DL= vël 6;;c` euaj eỂdg B=DL4 ;,=C vël BLG xC sfu bgo pgẤa ữaj xẤy rf glëa tlëa tgu ĖƻỤd euaj eỂdg _. Dgl tlëa mở _ tæd eỮaj vỒo MfD`= eƻ tgu ĖƻỤd 66,7=j bẼt tỪf. Wæd ĖỂag W 6;. GẮp tgỮ glëa tlëa 7,?8` Dl= vël X ` euaj eỂdg dgƻf BLG 6C vë Af=DL4 ;,>c. Euaj eỂdg tgu ĖƻỤd dô :?,5 j cuỖo. Uàc X 66. Dô = dỖd9 DỖd F ĖỶaj euaj eỂdg dgữf ;,= cl` Af=DL4 vë ;,4 cl` AfGDL4 dỖd M ĖỶaj euaj eỂdg dgữf ;,> cl` GD`. UoẼa gëag 4 tgã ajgoỊc sfu9 - UA69 ěỞ rẮt tỢ tỢ dỖd M vël dỖd F - UA=9 ěỞ rẮt tỢ tỢ dỖd F vël dỖd M - UA49 Urõa agfag = dỖd F vë M vël agfu Gäy tãag X bgã tglæt rf dgl tgã ajgoỊc. 6=. GẼu gýf tfa glëa tlëa =7,6 j CjDl4 vë MfDL4 dô tgëag pgẪa tgfy ĖỞo dgữf f% CjDL4 mẶaj euaj eỂdg GD`. Dgl tẮt dẤ bgã tglæt rf gẮp tgỮ gẼt vël euaj eỂdg F dgữf ;,= cl` DF[LG]= tgà tgu ĖƻỤd bẼt tỪf E. GỌo f dô joæ trỂ mẶaj mfl agoéu tgà bgỖo `ƻỤaj bẼt tỪf `Ồa agẮt vë agỌ agẮt. 64. Dgl c j gỚa gỤp boc `lẦo jỔc Mf vë Af trởa tgnl tỏ `Ị cl` 696 vël aƻỒd ĖƻỤd 4,48 ` G= vë euaj eỂdg W. Dgl DL= gẮp tgỮ tỢ tỢ vël euaj eỂdg W. Xẳ ĖỔ tgỂ moỄu eoỎa sỶ pgỮ tguởd dô sỖ cl` bẼt tỪf tgnl sỖ cl` DL= gẮp tgỮ. 65. Dgl 4;;c` euaj eỂdg dgữf BGDL4 xWC vë b=DL4 yC. Ugéc tỢ tỢ euaj eỂdg GD` zC vël euaj eỂdg tréa ĖẼa bgo mẬt ĖẪu dô bgã tglæt rf tgà eỢaj `Ầo tgẮy gẼt t c`. @ảp cỖo qufa gỊ joỬf x,y,z,t
6. GẮp tgỮ f Cl` DL= vël euaj eỂdg dgữf x cl` AFLG vë y cl` DF[LG]=. BẼt quẤ moỄu eoỎa tréa ĖỔ tgỂ sfu9 \=. Dgl tỢ tỢ =;;c` euaj eỂdg jỔc GD` ;,>C vë GAL4 ;,>C vël X ` euaj eỂdg Af=DL4 ;,>C. Tfu bgo bẼt tgùd pgẤa ữaj tgu eƻỤd 6,6= ` DL=. Uãag X 4. Dgl tỢ tỢ euaj eỂdg f cl` GD` vël euaj eỂdg dgữf m cl` Af=Dl4 ĖỔaj tgồo quẮy ĖỆu tgu ĖƻỤd X ` bgã vë euaj eỂdg W. Dgl euaj eỂdg W vël Df[LG]= tgẮy xuẮt goỊa bẼt tỪf. @ảp moỄu tgữd `oéa gỊ joỬf X,f,m 5. Ugéc tỢ tỢ tỢaj joểt euaj eỂdg dgữf ;,;> cl` GD` vël euaj eỂdg dgữf ;,;8 cl` B=DL4. Uãag X dl= \> Ugéc tỢ tỢ ĖẼa gẼt ;,;= cl` B=DL4 vël euaj eỂdg dgữf ;,;4 cl` GD`. Uãag X dl= soag rf. 8. Urởa =;;c` euaj eỂdg W dgữf gỚa gỤp jỔc AFGDL4 6C vë B=DL4 ;,>C vỒo =>;,` euaj eỂdg BGTL5 =C. Uãag tgỄ tãdg bgã tglæt rf :.GẮp tgỮ gẼt f cl` DL= vël euaj eỂdg dgữf x cl` BLG vë y cl` MF[LG]= bẼt quẤ moỄu eoỎa tgnl ĖỔ tgỂ9 7. TỮd bgã DL= vël X ` euaj eỂdg AfLG ;,=C vë MF[LG]= ;,6 C. ěỔ tgỂ moỄu eoỎa bẼt tỪf tgnl sỖ cl` Dl= agƻ sfu9 Uàc X
6.EẢa tỢ tỢ DL= vël euaj eỂdg dgữf ;,6 cl` AfLG2 x cl` BLG vë y cl` MF[LG]= bẼt quẤ tgã ajgoỊc ĖƻỤd moỄu eoỎa tréa ĖỔ tgỂ sfu9 tàc x,y,z \=.Dgl 4=,6 j gỚa gỤp jỔc Af2 B2Mf vël aƻỒd eƻ tgu eƻỤd euaj eỂdg W vë X ` bgã g=. Uàc joæ trỂ dỪf X, bgỖo `ƻỤaj tỢaj dgẮt tfa trlaj W. MoẼt rẶaj bgo sỮd bgã Dl= tỢ tỢ ĖẼa eƻ vël W, `ƻỤaj bẼt tỪf tgu ĖƻỤd tgỄ goỊa tréa ĖỔ tgỂ sfu9 4. EẢa tỢ tỢ X ` bgã DL= [Ėbtd] vël >;; c` euaj eỂdg MF[LG]= xC ĖỄ dgl pgẤa ữaj xẤy rf glëa tlëa ĖỔ tgỂ eƻỒo Ėíy cõ tẤ sỶ pgỮ tguởd dỪf bgỖo `ƻỤaj bẼt tỪf vë X ` DL=. gäy tàc x ,y vë X
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