Question

Balance each equation

1. _2__Na + ___MgF₂ _2__NaF + ___Mg






2. ___Mg + ___HCl ___MgCl₂ + ___H₂






3. ___Cl₂ + ___KI ___KCl + ___I₂






4. ___NaCl ___Na + ___Cl₂






5. ___Na + ___O₂ ___Na₂O






6. ___Na + ___HCl ___H₂ + ___NaCl






7. ___K + ___Cl₂ ___KCl

Answer 1

3 because it seems like the smartest answer ;)

Answer 2

1) is right
2)Mg+2HCL—>MgCl2 +H2
3)Cl2 +2KI—>2KCL +I2
4)2NaCl—> 2Na +Cl2
5)4Na+O2–>2Na2O
6)2Na +2HCL—>2NaCl + H2
7)2K + Cl2–>2KCL