Balancing Chemical Equations

__Na + __Cl₂ --> __NaCl

• 1,1,2
• 2,1,2
• 2,1,1
• already balanced

__H₂O₂ --> __H₂O + __O₂

• already balanced
• 2,1,1
• 2,2,1
• 2,1,2

Balancing this reaction: ____ CH₄ + ____ O₂ ---> ____ CO₂ + ____ H₂O

• Already Balanced

• 1,2,1,2
• 1,2,2,1
• 2,1,1,2

Balance this reaction: ____ NaF + ____ Br₂ ---> ____ NaBr + ____ F₂

• 3,1,2,1
• 1,2,3,4
• 2,1,2,1
• Already Balanced

Balance this reaction: ____ BaS + ____ PtF₂ ---> ____ BaF₂ + ____ PtS

• Already Balanced

• 1,2,1,1
• 1,1,1,2
• 2,1,1,1

Is this equation balanced?

• yes
• no
• Not enough information

Is this equation balanced?

• yes
• no
• Not enough information

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

• Yes
• No

Balance this equation
_N₂ + _H₂ --> _NH₃

• 1,2,3
• 1,3,2
• 1,1,2
• 2,1,1

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

• 2
• 6
• 1
• 4