Ребята помогите упражнения 9

А) $2Ca+O_{2}=2CaO$
$CaO+H_{2}O=Ca(OH)_{2}$
$Ca(OH)_{2}+2HNO_{3}= Ca(NO_{3})_{2}+2H_{2}O$
б) $4P+5O_{2}=2P_{2}O_{5}$
$P_{2}O_{5}+3H_{2}O=2H_{3}PO_{4}$
$2H_{3}PO_{4}+3Mg(OH)_{2}=Mg_{3}(PO_{4})_{2} + 6H_{2}O$
в) $2Cu+O_{2}=2CuO$
$CuO+2NO_{2}=Cu(NO_{3})_{2}$
$Cu(NO_{3})_{2}+Ba(OH)_{2}=Cu(OH)_{2}+Ba(NO_{3})_{2}$
г) $2Fe(OH)_{3}=Fe_{2}O_{3}+3H_{2}O$
$Fe_{2}O_{3}+6HCl=2FeCl_{3}+3H_{2}O$
$FeCl_{3}+3KOH=Fe(OH)_{3}+3KCl$