De thi IJSO cap thanh pho nam hoc 20162017

H S GI6I MOn :V TLi Nedy : I 016 oi gian biti:45 ilt Gi6m ho Di6m BAng s6 Bing c Hq va r/ 2t PhAn tdc I: Trfc nghiQm (10 di6 ViQtN li 50 m nh 1: N6 30 feet, A c A.5:6 vd hai v4ch li6n voi feet:0,3048 m B 80 D r23 30 km/h 110 B.6:5 C.3:10 ti c6ch v? gi BvdAli5:3viti c6u BvdAld D l0:3 Trang 1/6 Ciu Nguoi ta chO t9o m6y thriy luc, rn6y co ii s6 diCr tich pit-t6ng lon vi pit-tdng nho b[ng 100 (xem hinh 2)' D6 nnng mQt td co kh6i lugng 50 tAn, pit-t6ng nho phdi thirc hiQn i00 hdnh trinh,trong thUi gian 1,5 phrit nho dQng co diQn, bi6t r6ng mdi hanh trinh pit-tdng nho dich chuy6n mQt qudng dudng ,2 m C6ng srret cua rndy thuy lyc li A c t lli W I kw B 300 w D kW F{inh tuong irng tr€n m6i cien co bQ b6ng cidn ndy rnic sfng binh thuong? A.2I Y I).9v, C.12Y, B i8 V CAu Quay mQt khung dAy kin hinh chft nh{t quanh tryc quay A trorfg mQt nr tnrong r10u i3 (xom hinh 3) R Hinh A Hlnh B Hinh C Hlnh D uh3 Chqn dung truong hqrp c6 ddng diQn cAm img xuAt hiQn khung {Ay, A Hinh A B Hinh B C Hinh C, D Hinh D Cflu Nam mu6n pha nu6c Am 06 u5ng, b[ng c6ch d6 nude n6ng tir tu theo binh vao binh da c6 sin nuoc lqnh Huy th6y vfy khuy0n Nam n€n I ngugQ lai, c16 nutrc l4nh vio thanir binh, binh c6 sEn nu6c n6ng s0 girip qud trinh trao e6i ntriqt lifta nudc lqnh vd nu6c ndng nh hon, FIuy ldm theo c6ch ndy dpa tr0n hiQn tugrrg: a OOi tuu C Bilc xa CAu Gutmg ld clpng cp khdng thO thi6u bQ 116 d*g y t6 cua c6c nha si (xem hinh 4) Vdi t6c ctqng phan chi0u rinh s6ng d6n rdng, soi rd nh g ncri mit khdng thAy dugc, git m6i, m6, lufi bgnh nhdn xa noi didu tr1 Gucrng nha si thudng dirng ld gu g A cAu l6i ts C, D cAu l6m l6i vd guong cAu l6m cAu l6i vd glrqng phAng cAu I.tinh Trang 2/6 C6u MQt Oi g5 n6u thi nu6c thi nOi tl: tich? A U6 B s/12 tho tich cho c.711,2 D s/6 tlturg phai chiu 5p s li: i d d0 sdu cang I thi cdurg cao pn vd m6i chdo cang pheng , x c lqt ve luc KCt A 3V c 3,0 v n 6ng cang ddi g s6 chi cria vdn k6 ld B 6,0 V D 6V Trang 3/6 Phin II: Ts tugn (lr) di6 ) la enh cria AB clugc t4o bcri u kinh, ciic ti6u ditim chinh Hinh Trang 4/6 CAu (3 di6m) p=1000k ^-lnnnl- nh7 Ciu (a tti6m) thufn v6i vfln t5c cria vdt ung ld Rr vd Rz (& > Rr) lQ Lan luqt thA nhe v4t A vd vflt B nu6c thi chung chuy6n eOng c g dung xu6ng du6i, tdc 6n dinh kh6ng d6i tuon; une ld vr Vd vr NAi ro; rrar A vd B vcd bdng mQt sgi th v r6i thA he rF vd nudc tuong img ld D vd Dn, Tim v khdi lu eC hC g ri€ng cua sft (Gidm thi coi thi kh6ng gidi thich gi thAm) Trang 6/6 cAc uOnr g cr6r cAp Ntrm hgc 201 - 2016 of cuixu rs r pnO M6n : H6 H8C Ngdy thi: I4/, I6 :45 gian I rtt Ph6ch: thi vd Cho ngu tu H: 1; C: 12; N: 14; O: 16; =23;Mg=24; Al:27i5: 2; Cl= 35,5; Ca: Fe = 56; Cu = 64; Zn= 65; Br:80; Ag = 108; : 137 I Tric nghiQm (10,0 Thf sinh khoanh trdn vio m$t I 40; PhAn chgn drfng A, B, C hofc D dng, tinh th€ eanxi c6c nguy€n trl ld nhirng hinh cAu chi6m A.0,185nm B.0,196 c.0,155 D.0,169 Zn vdo mQt khan c6 ktr6i luqng A 6,480 g lugng vira dri dung can dung dich Y rtugc mu5i h 8.6,245 g c.5,955 g I dlch Y c0 the hoa tan t6i da bao nhi€u A 3,36 g 8.3,92 I D.4,025 g FeO vd FezOr tucrng ung ld thu dugc dung dlch Y Dung sit? c.l,I2 D.4,49 g g sau: Dun s6i dung dich h A Phdn hriy h6t mu5i cacbonat, tr6nh viQc tgo k6t tua FeCOr C E6 nu6c khri Fe(III) Fe(II) D D nhanh t6c rtQ phin tmg Cilu 5: H6n hg'p khf G g6m hithoc G so vdi hi lA 15,4 Bflt tia ltta vd hoi Cho h6n hgp Y qua dung dich HzSO+ d{c, du thu duqc hd l