Question

I'm so confused... please help

Answer 1

7. 4Al + 3O2 --> 2AL2O3

8. MgBr2 + 2Na ---> 2NaBr + Mg

9. Li2SO4 + BaBr2 --> 2LiBr + BaSO4

Answer 2

7) Aluminum + Oxygen → Aluminum Oxide
4 Al + 3 O2 → 2 Al2O3

8) Magnesium Bromide + Sodium → Sodium Bromide + Magnesium
MgBr2 + 2 Na → 2NaBr + Mg

9) Lithium Sulphate + Barium Bromide → Barium Sulphate + Lithium Bromide
Li2SO4 + BaBr2 → BaSO4 + 2 LiBr

10) Butane + Oxygen → Water Vapour + Carbon Dioxide
2 C4H10 + 13 O2 → 10 H2O + 8 CO2