Chemical Equations & Balancing

PCl₅ + ___ H₂O → ___ HCl + H₃PO₄

• 4, 5

• 1, 6

• 3, 8

• 2,2

 Mg  +  ___ HCl  →   MgCl₂  +   H₂

• 1
• 2
• 3
• 4

Number of C's in 2Na₂CO₃

• 1
• 2
• 3
• 5

The number of Na's in Na₂CO₃

• 1
• 2
• 3
• 6

How many total atoms are in the compound C₂H₈O ?

• 11
• 2
• 8
• 1

Name the part in red:

H₂ + O₂ -> H₂O

• Coefficient
• Product
• Yield
• Subscript

Is the following equation balanced or unbalanced ? 
Al + O₂ --> Al₂O₃

• Balanced
• Unbalanced

What are the coefficient used to balance the equation below?
__Ag₂O →__ Ag +___O₂

• 2,4,1
• 1,1,1
• 2,1,2
• 2,2,2

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