Is it Balanced?

What is the total number of atoms present in 5Na₃PO₄?

• 5

• 55

• 40

• 8

Is the following equation balanced?

Al + O₂ ---> 2Al₂O₃

• YES

• NO

Tags

NGSS.MS-PS1-5

Is the following equation balanced?

2C₂H₂ + 5O₂ ---> 4CO₂ + 2H₂O

• YES

• NO

Tags

NGSS.HS-PS1-7

Is the following equation balanced?

NaHCO₃ ---> Na₂CO₃ + H₂O + CO₂

• YES

• NO

Tags

NGSS.HS-PS1-7

Which of the following equations are correctly balanced?

• 12CO₂ + H₂O ---> C₆H₁₂O₆ + O₂

• CO₂ + H₂O ---> 3C₆H₁₂O₆ + O₂

• CO₂ + 9H₂O ---> C₆H₁₂O₆ + O₂

• 6CO₂ + 6H₂O ---> C₆H₁₂O₆ + 6O₂

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-7

Which problem is balanced?
(Check ALL answers)

• PbO₂ + 2H₂
• SO₂ + H₂0 --> H₂SO₄
• 2Na + 2H₂O --> 2NaOH + H₂

Tags

NGSS.HS-PS1-7