Question

Basic Chem:

1. FeS2 + O2 --> Fe2O3 + SO2
Balanced Equation:

2. Al + O2 --> AlO2
Balanced Equation:

3. K + Br2 --> KBr
Balanced Equation:

4. SiO2 + HF --> SiF4 + H2O
Balanced Equation:

Answer 1

1. 2Fes2 + 5.5O2. Fe2O3 + 4SO2

2. is already balanced

3. 2k + Br2. KBr

4. SiO2 + 4HF. SiF4 + 2H2O

hope that helps