N2+ O2 = 2NO
2NO + O2 = 2NO2
2NO2 + H2O = HNO3 + HNO2
CaCO3 + 2HNO<span>3</span> =Ca(NO3)2 + H2O + CO2
<span>4HNO₃(конц.) + Cu = Cu(NO₃)₂ + 2NO₂ +
H₂O
</span><span>Cu(NO₃)₂
+ 2NaOH = Cu(OH)₂↓ + 2NaNO₃
</span>Cu²⁺ + 2NO₃⁻
+ 2Na⁺ + 2OH⁻ = Cu(OH)₂↓ + 2Na⁺ + 2NO₃⁻
<span>Cu²⁺ + 2OH⁻ = Cu(OH)₂↓
</span>
<span><span>Cu(OH)₂+ t = CuO + H₂O</span>
</span>
<span>MeO</span>1.5
<span>X/(X+1.5*O) = 0.7</span>
<span>Fe</span>
M(NaCl)=60*0,009=0,54 г
;m(H2O)=60-0,54=59,46г.