Zadanie 1
a) CaO
b) MgBH2
c) HBr
d) Fe(OH)2- wodorotlenek żelaza(II)
Fe(OH)3- wodorotlenek żelaza(III)
e) HNO3
Zadanie 2
mH2CO3=2*1 u+12 u+3*16 u=62 u
2 u---x%
62 u---100%
x=3,23%H
12 u---x%
x=19,35%C
100%-(3,23%+19,35%)=%O
%O=77,42%
Zadanie 3
a) 2 Li+H2--->2 LiH
b) HCl(g)--H2O-->HCl(aq)
c) 4 K+O2--->2 K2O
d) SO3+H2O--->H2SO4
Zadanie 4
I x II
H3PO4
3*I+x=4*II
III+x=VIII
x=VIII-III
x=V
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Zadanie 1
a) CaO
b) MgBH2
c) HBr
d) Fe(OH)2- wodorotlenek żelaza(II)
Fe(OH)3- wodorotlenek żelaza(III)
e) HNO3
Zadanie 2
mH2CO3=2*1 u+12 u+3*16 u=62 u
2 u---x%
62 u---100%
x=3,23%H
12 u---x%
62 u---100%
x=19,35%C
100%-(3,23%+19,35%)=%O
%O=77,42%
Zadanie 3
a) 2 Li+H2--->2 LiH
b) HCl(g)--H2O-->HCl(aq)
c) 4 K+O2--->2 K2O
d) SO3+H2O--->H2SO4
Zadanie 4
I x II
H3PO4
3*I+x=4*II
III+x=VIII
x=VIII-III
x=V