Chemical Balancing

NaBr + Ca(OH)2 →CaBr2 + NaOH Coefficient for Sodium Bromide

• 1
• 2
• 3
• 4

NaBr + Ca(OH)2 →CaBr2 + NaOH Coefficient for Calcium Hydroxide

• 1
• 2
• 3
• 4

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

• 2
• 6
• 1
• 4

Which equation is balanced?

• PbO₂ + 2H₂--> H₂SO₄

• SO₂ + H₂0 --> H₂SO₄

• 2Na + 2H₂O --> 2NaOH + H₂

• 2Na + 2H₂O --> 2NaOH + H

In balancing chemical equations, we change

• Coefficients
• Subscripts
• Both can be changed

What coefficient does NO need to balance this equation?

N₂+O₂ → __NO 

• 1 or AB

• 2
• 4