Объяснение:
1)Na+O=NaO
Na+OH=NaOH
2Na+H2SO4=H2+Na2SO4
2) Ca+O=CaO
Ca+OH=Ca(OH) 2
Ca+H2SO4=H2+CaSO4
3) 2Al+3O=2Al3O
Al+OH=Al(OH)3
2Al+3H2SO4=3H2+Al2(SO4)3
Объяснение:
1)Na+O=NaO
Na+OH=NaOH
2Na+H2SO4=H2+Na2SO4
2) Ca+O=CaO
Ca+OH=Ca(OH) 2
Ca+H2SO4=H2+CaSO4
3) 2Al+3O=2Al3O
Al+OH=Al(OH)3
2Al+3H2SO4=3H2+Al2(SO4)3