Show the initial numbers of reactant and product atoms

Question

Questions:

1. In the real world, you do not have a program to balance equations for you.  For questions 12-16 below, please fill in the first table below to indicate the initial numbers of reactant and product atoms.  Balance the equation on your own and then fill in the second table for an updated table of reactant and product atoms which shows that the equation has been balanced. 

Example:

H₂  +  I₂   ®  HI

Make a table to show the initial numbers of reactant and product atoms:

Atoms on the left of the arrow	Atoms on the right of the arrow
2 H	1 H
2 I	1 I

Balance the equation:      H₂  +  I₂   ® 2 HI

 Make a table to show that the reaction is correctly balanced:

Atoms on the left of the arrow	Atoms on the right of the arrow
2 H	2 H
2 I	2 I

2. _____ Na + _____ H2O --> _____ NaOH + _____ H₂

Make a table to show the initial numbers of reactant and product atoms:

Atoms on the left of the arrow	Atoms on the right of the arrow

Balance the equation:     

 Make a table to show that the reaction is correctly balanced:

Atoms on the left of the arrow	Atoms on the right of the arrow

3. _____ H₂SO₄ + _____ NaOH --> _______ Na₂SO4 + _____ H₂O

Make a table to show the initial numbers of reactant and product atoms:

Atoms on the left of the arrow	Atoms on the right of the arrow

Balance the equation:     

 Make a table to show that the reaction is correctly balanced:

Atoms on the left of the arrow	Atoms on the right of the arrow

4.  _____K + _____ B₂O₃ ® _______ K₂O + _______ B

Make a table to show the initial numbers of reactant and product atoms:

Atoms on the left of the arrow	Atoms on the right of the arrow

Balance the equation:     

 Make a table to show that the reaction is correctly balanced:

Atoms on the left of the arrow	Atoms on the right of the arrow

5. _____ C + _____ S₈ ® ______ CS₂

Make a table to show the initial numbers of reactant and product atoms:

Atoms on the left of the arrow	Atoms on the right of the arrow

Balance the equation:     

 Make a table to show that the reaction is correctly balanced:

Atoms on the left of the arrow	Atoms on the right of the arrow

6. ______ NaOH + _______ H₂CO₃ ® ______ Na₂CO₃ + _______ H₂O

Make a table to show the initial numbers of reactant and product atoms:

Atoms on the left of the arrow	Atoms on the right of the arrow

Balance the equation:     

 Make a table to show that the reaction is correctly balanced:

Atoms on the left of the arrow	Atoms on the right of the arrow