H : S : O = 0.0244/1 : 0.3902/32 : 0.5854/16
H : S : O = 0.0244 : 0.01219 : 0.0366
H : S : O = 2 : 1 : 3
Формула: H2SO3
CnH2n+1OH → CnH2n+1Br
M(CnH2n+1) -- M(Br)
(100-73,4) --- 73,4
M(Br) = 80
M(CnH2n+1) = 29
C2H5<span>OH (n = 2)
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Sn(OH)2+CaO=Ca(OH)2+SnO<span>
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