Exit Check 4.1 - Balancing Chemical Equations

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

2Mg + ​ (a)   HCl ---> 2MgCl₂ + 2H₂

• 4
• 1
• 2
• 3

Tags

NGSS.MS-PS1-5

• 3
• 2

Tags

NGSS.MS-PS1-5

In 3P₂O₅, there are ​ (a)   phosphorus (P) atoms and ​ (b)   oxygen (O) atoms.

• 6
• 15
• 8
• 3
• 12
• 21

Tags

NGSS.MS-PS1-1

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

• 1
• 3
• 2

Tags

NGSS.MS-PS1-5

Balance this equation
_N₂ + _H₂ --> _NH₃

• 1,2,3
• 1,3,2
• 1,1,2
• 2,1,1

Tags

NGSS.HS-PS1-7