Balance Chemical Equation

Balance this equation, CaCO₃(s) → CaO(s) + CO₂(g)?

• 3,1,2

• 1,1,1

• 1,3,1

• 2,6,3

Tags

NGSS.MS-PS1-5

Balance this equation, AlCl₃ + NaOH → Al(OH)₃ + NaCl

• 3,1,3,1

• 1,3,3,1

• 1,1,1,3

• 1,3,1,3

Tags

NGSS.MS-PS1-5

Balance the following equation: Cr(s) + Fe(NO₃)₂ (ag) → Fe(s) + Cr(NO₃)₃ (ag)

• 2,3,3,2

• 2,3,2,3

• 4,6,6,2

• 1,3,3,1

Tags

NGSS.MS-PS1-5

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

• 1,1,2,1

• 1,1,1,2

• 1,2,1,1

• 2,1,1,1

Tags

NGSS.MS-PS1-5

Fill in the blank to balance the chemical equation.
2KI  +  ____Cl₂ →  2KCl  +  I₂

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

When the equation H₂O₂ --> H₂O + O₂ is completely balanced, the coefficient for water is 

• 5

• 8

• 3

• 4

Tags

NGSS.MS-PS1-5

When the equation NH₃ + O₂ --> HNO₃ + H₂O is completely balanced using smallest whole numbers, the coefficient of O₂ would be

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5

Balance this equation.
_Mg + _Cl₂ --> _MgCl₂

• 2,1,1

• already balanced

• 1,2,1

• 1,1,2

Tags

NGSS.MS-PS1-5

Write a complete balanced reaction for the following.
Calcium metal reacts with oxygen gas to form a solid

• 2 Ca (s) + O₂ (g) --> 2 CaO (s)

• 2 Ca (s) + 2 O (g) --> 2 CaO (s)

• Ca (s) + O₂ (g) --> 2 CaO (s)

• Ca (s) + O₂ (g) -->  CaO₂ (s)

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

When balancing this equation, Fe + Cl₂ → FeCl₃, the correct coefficient for Cl₂?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-5