3H2O+2P-2HPO3
2----------------------------------------------------------------------
CnH2n+2
w(C)=12n/(12n+2n+2)*100%
0.8276/1=12n/(14n+2)
n=4
C4H10
Реакция серебряного зеркала у альдегидов: ch3-c=o-h + Ag2O⇒(над стрелкой NH3×H2O) ⇒ch3-cooh+2Ag
<span>8K + 9HNO3= 8KNO3 + NH3 + 3H2O
K</span>°-1e=K⁺
N⁺⁵+8e=N⁻³
Дано
m(ppa HCL)=29.2 g
W(HCL)=5%
MgSO3
---------------------
V(SO2)-?
m(HCL)=29.2*5%/100%=1.46 g
1.46 X
2HCL+MgSO3-->MgCL2+H2O+SO2 M(HCL)=36.5 g/mol Vm=22.4 L/mol
2*36.5 22.4
X=1.46*22.4 / 73
X=0.448 L
ответ 448 мл