напишите на листочке и пришлите сюда

1. I played football yesterday. --> I have played football recently. --> I was playing football yesterday all day long. 2. I worked with my mother at home yesterday. --> I have already worked with my mum. --> I was working with my mom yesterday. 3. I went to the cinema last week. --> I have gone to the cinema recently. --> While I was going to the cinema, my friend broke his leg. 4. I didn't do my homework. --> I haven't done my homework yet. --> I wasn't doing my homework all day long. 5. I made an apple pie one month ago. --> I have already made an apple pie. --> I was making an apple pie when you came home.

1)H2SO4+2KOH===>K2SO4 + 2H2O2H(+) + SO4(2-) + 2K(+)+2OH(-)>2K(+) + SO4(2-) +2H2O2H(+)+2OH(-)===>2H2O 2)2Al+3H2SO4===>Al2(SO4)3+3H22Al(3+) + 6H(+) + 3SO(2-)===>2Al(3+) + 3So4(2-) + 6H(+) 3) Какой оксид?SO2 или SO3?H2SO4+SO3===>H2S2O7(олеум)4)Опять какой оксид?Fe2O3?FeO?  Fe2O3+3H2SO4===> Fe2(SO4)3 + 3H2O2Fe(3+) + 3O(2-) + 6H(+) + 3SO4(2-)==> 2Fe(3+) + 3SO4(2-) + 3H2O 5)Fe2(SO4)3+3Ba(NO3)2===>3BaSO4(стрелка вниз) + 2Fe(NO3)3 2Fe(3+) +3SO4(2-) + 3Ba(2+) + 6NO3(-)===>3BaSO4(стрл.вниз) +2Fe(3+) + 6NO3(-)3SO4(2-)+3Ba(2+)>3BaSO4(стрл.вниз)6) С медью разбавленная серная кисота не будет реагировать(т.к. медь в ряду напряжения после водорода)7)H2SO4 + Zn(OH)2> ZhSO4 + 2H2O2H(+) + SO4(2-) + Zn(2+) + 2OH(-)===>Zn(2+) + SO4(2-) + H2O2H(-) + 2OH(-) ===>H2O