Balancing equations

Balance the equation:

CO₂ + H₂O → C₆H₁₂O₆ + O₂

_{Answer as _:_:_:_}

(a)  

SiCl₄ + H₂O → H₄SiO₄ + HCl

(a)  

KClO₃ → KClO₄ + KCl

(a)  

KNO₃ --> KNO₂ + O₂
What coefficients are needed to balance the reaction?

• 2, 2, 1
• 2, 3, 2
• 1, 2, 2
• 1, 3, 1

Balance this equation
_N₂ + _H₂ --> _NH₃

• 1,2,3
• 1,3,2
• 1,1,2
• 2,1,1

Balance the following equation:

___ SeCl₆+ ___ O₂→___ SeO_{2+____}Cl₂

• 1, 1, 1, 3

• 2, 1, 2, 1

• 1, 2, 1, 2

• 2, 2, 2, 4