M(NaOH)=200*1,1*0,1=22 г
m(р-ра)=200*1,1=220 г
(220+х)*0,05=22
220+х=440
х=220 г
V(H2O)=220 мл
3Cu(NO3)2+2Na3PO4=Cu3(PO4)2+6NaNO3
3Cu(2+) +6NO3(-) + 6Na(+) +2PO4(3-) =6Na(+) + 6NO3(-) + Cu3(PO)2
3Cu(2+) + 2PO4(3-) = Cu3(PO4)2
CH₃ - NH₂
ω(N) = m(N) / M(CH₃NH₂) = 14 / 31 = 45.1%
Любых?
2 H2<span> + O</span>2<span> = 2 H</span>2<span>O
</span>NH4NO3<span> = N</span>2O + 2 H2<span>O
</span><span>
</span>
2Ca+O2=2CaO
2Pb+O2=2PbO
4Fe+3O2=2Fe2O3
Sn+O2=SnO2
2Cu+O2=2CuO
C+O2=CO2
N2+O2=2NO
Si+O2=SiO2
4P+5O2=2P2O5