.
- .
, .
. , NA (, , , ). NA , 12 12C. , NA.
NA = 6,021023.
, , , , . , , , -, - -.
. . , /, . ( ). , , .
, .
, (H2O) MH2O = 2 MH +MO = 21+16 = 18 (/).
, , , = 16 (/), (O2) = 32 (/).
, , . .
NA=6,022×1023 . .
1 2, 1 (Fe), 1 H2O . .
, 1 Vm = 22,413 996(39) [. , .
:
A + B + C = D
:
3 + 2 + 2 = (3)2,
:
= + + D.
, .
, , , , .
|
|
, :
+ = + .
-:
2l + Fe2O3 = 2F + l23,
Zn + 2l = Znl2 + 2,
2r + l2 = 2l + r2,
2lO3 + l2 = 2KlO3 + l2.
, :
+ D = D + .
- , . - , , :
ZnO + 2S4 = ZnS4 + 2,
AgN3 + r = gr + N3,
rl3 + N = r()3 + Nl.
, ,
, . .
, . .
.., :
1. ;
2. ;
3. .
, .
8) :