Balancing equations

Fill in the missing number:

Mg + ? HCl → MgCl₂ + H₂

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7

Fill in the missing number:

2 Na + 2 H₂O → ? NaOH + H₂

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7

Fill in the missing number:

K₂CO₃ + 2 HCl → ? KCl + H₂O + CO₂

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7

Fill in the missing number:

? Al + 3 O₂ → 2 Al₂O₃

• 1

• 2

• 3

• 4

Fill in the missing numbers:

A Fe₂O₃ + 3 C → B Fe + 3 CO₂

• 2, 4

• 2, 3

• 3, 1

• 4, 2

Tags

NGSS.HS-PS1-7

Fill in the missing numbers:

A O₂ + CH₄ → B H₂O + CO₂

• 2, 4

• 2, 3

• 2, 2

• 4, 2

Tags

NGSS.HS-PS1-7

Fill in the missing numbers:

Li₂CO₃ + A HNO₃ → 2 LiNO₃ + H₂O + B CO₂

• 2, 4

• 2, 3

• 2, 2

• 2, 1

Tags

NGSS.HS-PS1-7

Balance the equation:

__ Na + __ CuSO₄ → __ Na₂SO₄ + __ Cu

• 2, 1, 1, 2

• 2, 1, 1, 1

• 2, 2, 2, 1

• 2, 1, 2, 1

Tags

NGSS.HS-PS1-7

Balance the equation:

__ Al + __ Ag₂SO₄ → __ Al₂(SO₄)₃ + __ Ag

• 2, 3, 1, 6

• 2, 1, 1, 2

• 2, 3, 2, 3

• 2, 1, 2, 6

Balance the equation:

__ C₃H₈ + __ O₂ → __ CO₂ + __ H₂O

• 2, 2, 3, 4

• 1, 3, 3, 4

• 1, 5, 2, 4

• 1, 5, 3, 4

Tags

NGSS.HS-PS1-7