a) CaO + N2O5 = Ca(NO3)2
б) SO3 + CuO = CuSO4
в) P2O5 + 6KOH = 2K3PO4 + 3H2O
г) Fe2O3 + 3SiO2 = Fe2(SiO3)3
Fe + 2HNO3<span> = Fe(NO</span>3)2<span> + H</span><span>2
</span>2Fe + 6HNO3<span> = 2Fe(NO</span>3)3<span> + 3H</span><span>2</span>
СH4=C+2H2
m(C)=12*24/16=18 η=96% m(C)=18*0.9617.28 гр
CH₃
↓
CH₃-CH-CH-CH₂-CH₂-CH₃
↑
CH₃
2.3 - диметилгептан