, . , , . :
1) , ( , ) ;
2) ( ) , .
, , , , . .
32. , 52,4% 47,6 % . 39,1, 35,5.
, . 39,1, 35,5 , , , 39,5´ , 35,5´ . , .. 52,4:47,6. , :
39,1 : 35,5 = 52,4: 47,6
:
1,3 1,3 . , 1,3 ( , ) : : = 1: 1
, , 1, K2Cl2, K3Cl3 . . 1 .
33. , , 6:7:24.
, . 24, 14 16z 6, 7, 24. :
24: 14y: 16z = 6: 7: 24
:
: : z = 0,25: 0,50: 1,50 = 1: 2: 6
MgN206; Mg(NO3)2.
, , , , . .
34. , , 14,3 5,3 .
|
|
: Na2CO3 ´ 2O ( ), . , .
:
1.
14,3 5,3 = 9,0 2
2.
. Na2C3 = 2´23 + 12 + 3´6 = 106
. H2O = 2´1 + 16 = 18
3. ,
106 : 18 =5,3: 9,0
4.
: = 0,05: 0,5 = 1: 10
= 1, = 10
N2 ´ 10 H2.
35. , 93,75% 6,25% , 4,11.
:
1) . 12 1 :
12: = 93,75: 6,25
, , , :
: = 7,8125: 6,2500
, , 6,2500, :
: = 1,25: 1,00 = 125: 100 = 5: 4.
54 , : , , : 29 = 4,41: 1, = 29´4,41 = 128.
54 5´12 + 4´1 = 64, . . 108 - .
2) , . , , , , .
1.
= 29 ´ 4,41 = 128
2. ,
= = 128.
3.
120: 12 = 10, 8: 1 = 8.
4. C108, .