Balancing Equations

Front

Is this equation balanced?

Back

no

Front

Fill in the blanks with coefficient: PCl₅+_ H₂O→_ HCl+H₃PO₄

Back

4, 5

Front

Which problem is balanced?
Options:
PbO₂ + 2H₂ --> H₂SO₄
SO₂ + H₂O --> H₂SO₄
2Na + 2H₂O --> 2NaOH + H₂
2Na + 2H₂O --> 2NaOH + H

Back

2Na + 2H₂O --> 2NaOH + H₂

Front

Coefficient

Back

The large number to the left of a formula.

Front

Balance this equation
_Zn+_HCl-->_ZnCl₂ +_H₂

Back

1,2,1,1

Front

Balance this equation:
_Mg + _Cl₂ --> _MgCl₂

Back

already balanced

Front

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

Back

4

Front

The blue numbers in the image below represent ________

Back

subscripts

Front

Finish a balanced equation:
Mg(OH)₂ --> __________

Back

Mg(OH)₂ --> MgO+ H₂O

Front

Balance this equation:
P₄+O₂  -->  P₂O₃

Back

P₄+ 3 O₂ --> 2 P₂O₃