Balancing Reactions

What number do I need to balance the following chemical equation?

• 1

• 2

• 4

• 6

Tags

NGSS.HS-PS1-7

What number will balance the following chemical reaction?

• 1

• 4

• 8

• 16

Tags

NGSS.HS-PS1-7

Is the following reaction balanced?

• Yes

• No

Tags

NGSS.HS-PS1-7

What number do I need to balance the following chemical reaction?

• 2

• 4

• 6

• 8

Tags

NGSS.HS-PS1-7

Balance this equation.
_CH₄ + _O₂ --> _CO₂ + _H₂O

• 1,2,1,1

• 2,1,2,1

• 1,2,1,2

• 0,2,0,2

Tags

NGSS.HS-PS1-7

What is the right ratio of chemicals for the balanced chemical equation?

• 3,1 --> 2,3

• 3,2 --> 1,1

• 3,2 --> 2,4

• 3,2 --> 2,1

Tags

NGSS.HS-PS1-7

Which set of coefficients will correctly balance the following chemical reactions?

• 1,2,1,2

• 2,1,2,1

• 1,2,1,1

• 2,1,1,1

Tags

NGSS.HS-PS1-7

How many HCl molecules do you need to balance this equation?

2Mg + ​ (a)   HCl ---> 2MgCl₅ + 5H₂

• 10

• 1

• 2

• 5

Tags

NGSS.HS-PS1-7

Which problem is balanced?

• PbO₂ + 2H₂

• SO₂ + H₂0 --> H₂SO₄

• 2Na + 2H₂O --> 2NaOH + H₂

Tags

NGSS.HS-PS1-7

• 6

• 12

• 18

• 24

Answer explanation

To balance the reaction, we need 6 molecules of CO2 on the product side, so the correct coefficient for CO2 is 6.

Tags

NGSS.HS-PS1-7