[john4614]

Please help im stuck
1) 2Cu(s)+4HNO3(aq)-->2H2O(L)+2Cu(NO3)2(aq)+2NO2(g) Balanced?

2) ___NaHCO3(aq)+__Cu(NO3)2(aq)-->__CuCO3(s)+__H2O(l)+ ___CO2(g) ___NaNO3(aq) CANNOT GET THIS ONE

3) __NaHCO3(aq)+__HNO3(aq)-->__H2O(l)+___CO2(g)+___NaNO3(aq)

4) __CuCo3(s)+__H2SO4(aq)+__5H2O(l)-->__CuSO4*5H2O(s)+__CO2(g)

5 __CuSO4(aq)+__Fe(s)-->__Cu(s)+___FeSO4(aq) Balanced?

[Borek]

1^st and 5^th are OK.

Others don't look difficult, you probably just a need a fresh look.

In the second - start assuming there is one copper atom on both sides.