De HSG 9 vong huyen (2)
... Passengers (travel) on this bus bought their tickets in books. 3. Writing many letters (make) her happy. 4. Do you hear someone (cry) softly in the next room? 5. I (have) my house (paint) . That's ... (speak) 2. The tiger wanted to see the farmer's (wise) 3. The scouts do the work (volunteer) 4. Nowadays, scouting is popular (world) 5. The scouts also help the and street children,...
Ngày tải lên: 28/09/2013, 14:10
... 2 ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ………………………………………………………………………………………… ……………………...
Ngày tải lên: 21/10/2013, 23:11
... THI HSG CẤP HUYỆN ĐỀ THI HSG Năm học: 2008 – 2009 MÔN: Hóa 9 (vòng 2) Bài 1 !"#$ %& ' ( )* +, - ( . / ) ' . ' 0 123& / #1 / .3!4. ' # 0 . ' 5 ' 6! 7!8!!9 6 :...
Ngày tải lên: 21/10/2013, 23:11
De HSG cac vong
... Fe(OH) 2 Fe 2 (SO 4 ) 3 + KI -> FeSO 4 + K 2 SO 4 + I 2 Fe 2 (SO 4 ) 3 + KOH -> Fe(OH) 3 + K 2 SO 4 FeSO 4 + KMnO 4 + H 2 SO 4 -> Fe(SO 4 ) 3 + MnSO 4 + K 2 SO 4 + H 2 O Fe(OH) 3 ... hóa sau: a. Fe -> Fe 2 (SO 4 ) 3 -> FeCl 3 -> Fe(OH) 3 -> Fe(NO 3 ) 3 -> Fe -> FeCl 2 b. Cu CuO -> CuCl 2 Cu(OH) 2 -> CuO. Câu 2: (1 ,...
Ngày tải lên: 14/06/2013, 01:25
ĐỀ HSG HUẾ VÒNG 1 05-06
... (1 ) number of English people appear INCREASE to (2 ) in the paranormal. What is BELIEF the (3 ) for this? EXPLAIN (4 ) have found the answers to many of SCIENCE 1 our questions, but the more (5 ) ... (5 ) a group of birds, later to become known (6 ) “Darwin’s finches”. They were similar to one (7 ) in their colour, song, nests and eggs...
Ngày tải lên: 15/06/2013, 01:26
ĐỀ HSG HUẾ VÒNG 06-07
... 2 1 ) 1( ) 2 1 )( 1 () 0( 22 = −+ −+− YX YXX ⇔ 1 2)1 2( 2222 +−+=−+ YYXYX (2 ) 2,0 + Giải hệ (1 ) v (2 ). Rút X 2 từ (1 ) thay vào (2 ): (2 Y 2 -Y- 1) 2 = 2(1 -Y) ⇔ (Y- 1) 2 (2 Y+ 1) 2 = 2(1 -Y).Đang xét Y ≠ 1 nên :(Y-1 )( 2 Y+ 1) 2 = ... ( X; 0) , N 2 ( 2 1 (X+Y- 1); 2 1 (X+Y+ 1)) , N...
Ngày tải lên: 15/06/2013, 01:26
ĐỀ HSG HUẾ VÒNG 07-08
... 14 1 4) 4(3 7 )( 1 )( 2 )( 4)x x x x x x m + = t: ( ) ( ) ( ) 3 2 ( ) 1 2 4 7 14 8f x x x x x x x= = + v ( ) ( ) 2 2 ( ) 3 14 14 4 3 7 ( )g x x x x f x= + g(x) l a thc bc 4 vi ... 4 vi h s ca x 4 l -3 .Ta lp bng bin thiờn ca g(x). 1 ( ) ( ) ( ) 2 2 &apos ;( ) 3 14 14; &apos ;(...
Ngày tải lên: 15/06/2013, 01:26