ZnO - оксид цинка; у цинка +2, у кислорода -2.
Fe₂S₃ - сульфид железа (III); у железа +3, у серы -2.
P₂O₅ - оксид фосфора (V); у фосфора +5, у кислорода -2.
CH3CH2OH+HCL=CH3CH2Cl+H2O
Галогеналкан(хлорэтан) и вода
W=14:18Х100=77,7 % <span> массовая доля азота в аммиаке</span>
<span>H3PO4</span>
<span><span>H2SO4</span></span>
<span><span><span>HBr</span></span></span>
<span><span><span><span>H2SO3</span></span></span></span>
<span><span><span><span><span>H2CO3</span></span></span></span></span>
<span><span><span><span><span><span>HCl___это КИСЛОТЫ.</span></span></span></span></span></span>
<span><span><span><span><span><span><span>BeO____оксид</span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span>Sc(OH)3</span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span>LiOH___основания</span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span>AgNO3___СОЛЬ</span></span></span></span></span></span></span></span></span></span>