PLZ I NEED HELP Interpret the following equations in terms of
1- Numbers of representative particles(atoms and molecules).
2- Moles.
3- Masses of reactants and produces.
4- Volumes

1) Al2S3 2Al + 3S

2) C4H12 + 7O2 6H2O + 4CO2

3) Cl2 + 2KBr 2KCl + Br2