Balancing Equations

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.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

Which problem is balanced?

• PbO₂ + 2H₂--> H₂SO₄

• SO₂ + H₂0 --> H₂SO₄

• 2Na + 2H₂O --> 2NaOH + H₂

• 2Na + 2H₂O --> 2NaOH + H

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many Hydrogen are in 4H₂O + 2CH₄?

Tags

NGSS.MS-PS1-1

The blue numbers in the image below represent ________

• I don't know, and don't want to try

• coefficients

• subscripts

• none of the answers are correct

How many atoms of each element in the REACTANTS?

• Mg

• 3

• O

• 12

• H

• 14

• P

• 2

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Balance the following equation:

___ Mg+ ___ O₂→___ MgO

• 1, 1, 3

• 2, 1, 2

• 1, 2, 1

• 2, 2, 2

Tags

NGSS.MS-PS1-5

__Na + __Cl₂ --> __NaCl

• 1,1,2

• 2,1,2

• 2,1,1

• already balanced

Tags

NGSS.MS-PS1-5

What law governs the balancing of chemical equations?

• Law of Energy

• Law of Conservation of Matter/Mass

• Law of Gravity

• Law of Matter Movement

Tags

NGSS.MS-PS1-5

Balance this equation ​ (a)   N₂ + ​ (b)   H₂ --> ​ (c)   NH₃

• 1

• 3

• 2

Tags

NGSS.MS-PS1-5