Chemical reactions and balancing equations

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?

__Ca + __H₂O --> __Ca(OH)₂ + __H₂

• 2,1 --> 2,1
• 1,2 --> 1,1
• 1,2 --> 2,4
• 1,2 --> 2,1

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Na + __H₂O --> __NaOH + __H₂

• 2,2 --> 2,1
• 4,4 --> 4,1
• 1,2 --> 2,4
• 1,2 --> 2,1

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CO + __Fe₂O₃--> __Fe + __CO₂

• 3,1 --> 2,3
• 3,2 --> 1,1
• 3,2 --> 2,4
• 3,2 --> 2,1

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CH₄ + __O₂ --> __CO₂+ __H₂O

• 2,1 --> 2,1
• 1,2 --> 1,1
• 1,2 --> 1,2
• 1,2 --> 2,1

Tags

NGSS.MS-PS1-5

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__AgNO₃ + __H₂S --> __Ag₂S+ __HNO₃

• 2,1 --> 1,2
• 1,2 --> 1,1
• 1,2 --> 1,2
• 1,2 --> 2,1

Tags

NGSS.MS-PS1-5

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H₂ + __S --> __H₂S

• 1,1 --> 1
• 2,2 --> 2
• 1,2 --> 1
• 1,2 --> 2

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H₂SO₃ + __KOH--> __H₂O+ __K₂SO₃

• 2,1 --> 2,1
• 1,2 --> 1,1
• 1,2 --> 1,2
• 1,2 --> 2,1

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Al + __O₂--> __Al₂O₃

• 4,1 --> 2
• 4,3 --> 4
• 3,4 --> 1
• 4,3 --> 2

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__MnO₂ + __HCl --> __MnCl₂ + __H₂O __Cl₂

• 4,1 --> 2,1,2
• 1,2 --> 1,1,4
• 1,4 --> 1,2,1
• 1,4 --> 2,2,1

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__FeCl₃ + __Ca(OH)₂ --> __Fe(OH)₃ + __CaCl₂

• 4,3--> 2,1
• 3,2 --> 3,1
• 2,3 --> 2,2
• 2,3 --> 2,3

Tags

NGSS.HS-PS1-7