, 22 2008 . 21:06
+
(
School)
1. , : ['], ['], [']. []: [], [], []. ?
2. 9, , , )? + .
3. - , , .
4. : , , , , ?
, 10 2007 . 20:18
+
(
School)
- (5-10 ) . - : , ? . . , ".....". . , ! ? , !...... - =). !
!!!
, 02 2007 . 16:05
+
I_am_a_HOT (
School)
!!! 2 !!!
1) SO3 ; CH4 ; P2O5 ; H2S ; K2O
. .
2) , . , :
) (II) ; ) (III) ; ) ; ) .
3)
)Fe(OH)3 = Fe 2() O3( ) + H2O
)Na + Cl2 = NaCl
)Zn + HCl = ZnCl2 + H2
)H2 + N2 = NH3
4) , ( - \/ , II)
5) . ( I ) 440 . :
) - ( I ) ;
) ( )
) ( ) , ()
, , - !!! !! , 2!