kmay5351
contestada

Which of the following equations are correctly balanced?
I. AgNO3 + NaBr → AgBr + NaNO3
II. Al + O2 → Al2O3
III. CaCO3 → 3CaO + CO2
IV. Cu2SO4 + Zn → ZnSO4 + 2Cu

Respuesta :

i think it's I

I was confused by IV then search on gg and it said ZnSO4 should be Zn2SO4 instead but still im not sure Zn2SO4 is real