balancing examples

Balance the following equation:
___NaCl + ___ F₂  yields ___ NaF + ___Cl₂

• 1,1,1,1
• 2,2,2,2
• 2,1,2,1
• 1,2,1,2

Balance the following equation:
 ___Na₃PO₄ + ___CaCl₂ yields ___Ca₃(PO₄)₂ + ___NaCl

• 4,6,2,12
• 2,3,1,6
• 1,3,3,2
• 1,1,1,1

Balance this equation...
Sb₂S₃ + O₂ --> Sb + SO₂

• It is balanced
• Sb₂S₃ + 3O₂ --> 2Sb + 3SO₂
• Sb₂S₃ + O₂ --> 2Sb + SO₂
• I don't know...Oh well!

Balance this equation...
Sb₂S₃ + O₂ --> Sb + SO₂

• It is balanced
• Sb₂S₃ + 3O₂ --> 2Sb + 3SO₂
• Sb₂S₃ + O₂ --> 2Sb + SO₂
• I don't know...Oh well!

Is this balanced?...
Fe + S --> FeS

• YES!
• NO!

Is the following equation balanced or unbalanced?
Fe + S --> FeS

• balanced
• unbalanced

Which of the Following Correctly Balances this Equation? 
_H₂+_Cl₂ --> _HCl

• 2H₂ + Cl₂ --> 4HCl
• H₂+Cl₂ --> 2HCl
• 3H₂ + 3Cl₂ --> HCl
• H + Cl --> HCl

Which of the following shows the correct way to balance the chemical equation?
Fe + O₂ -> Fe₂O₃

• 4Fe + 3O₂ -> 2Fe₂O₃
• 2 Fe + 3O₂ -> Fe₂O₆
• 4 Fe + O₆ -> 2Fe₂O₃
• None of the options are correctly balanced.

_Na₃PO₄₊_KOH  --->  _NaOH + _ K₃PO₄

• 1 Na₃PO₄+3 KOH
  --->
  3 NaOH +  1 K₃PO₄
• 2 Na₃PO₄+2 KOH
  --->
  3 NaOH +  1 K₃PO₄
• 1 Na₃PO₄+2 KOH
  --->
  2 NaOH +  1 K₃PO₄
• 3 Na₃PO₄+3 KOH
  --->
  3 NaOH +  1 K₃PO₄