<span>1. Вг207 у первого7 у второго2</span>
<span> Li2О 1</span><span>и2</span>
<span> Ва</span><span>F2 2и1</span>
<span>2. N20 5</span><span> </span>
<span>МgСІ2</span><span> </span>
<span>С</span><span>uS</span>
<span>3.Fe2S3</span>
<span><span> К3Р</span></span>
<span>BaI2</span>
<span>4.сульфід калія, алюміній оксид, ферум(3)бромід</span>
<span>5.</span><span> </span><span> F2 +2 NaCl =2 NaF + Cl2</span>
<span> 4 Al + 3O2 =2 Al2O3</span>
<span> </span><span>CuO +2 HNO3 ---- Cu(NO3)2 + H2O</span>