объяснение:
2к+o2=k2o2
2agbr=2ag+br2
n2+3h2=2nh3
4al+3fe2o2=2al2o3+3fe
n2o2+h2o=2hno3
ch4=c+2h2
2al+3zncl2=2alcl3+3zn
2cao+2hno3=2ca(no3)2+h2o
al2o3+6hcl=2alcl3+3h2o
cu(oh)2=cuo+h2o
2h2po4+3cacl2=ca3(po4)2+4hcl
al(oh)3+3hno3=al(no3)3+2h2o
2fe+2agno3=fe(no3)2+2ag
