Question

Please help me solve these chemical equations:

___ CaCO3 = ___ CaO + ___ CO2

___ I2 + ___ Na2S2O3 = ___ NaI + ___ Na2S4O6

___ Mg + ___ P4 = ___ Mg3P2

__ Na + ___ Cl2 = ___ NaCl

Answer 1

This is impossible and confusing!!!

Answer 2

CaCO3 = CaO + CO2
I2 + 2Na2S2O3 = 2NaI + Na2S4O6
6Mg + P4 = 2Mg3P2
2Na + Cl2 = 2NaCl