Balancing Formulas

Balance this equation.
_CF₄ + _Br₂ -- _CBr₄ + _F₂

• 2,1,2,1

• 1,2,2,1

• 1,2,1,2

• 2,2,2,2

Tags

NGSS.MS-PS1-5

Balance this equation
_Al +_HCl --> _H₂ +_AlCl₃

• 2, 6, 3, 2

• it is already balanced

• 4, 12, 3, 4

• 2, 1, 4, 5

Tags

NGSS.MS-PS1-5

Is this equation balanced?

• Yes

• No

Tags

NGSS.MS-PS1-5

Balance the equation:

c

e

f

1

5

6

4

3

2

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The numbers placed in ​ (a)   of formulas to balance equations are called ​ (b)   , and they multiply all the atoms in a ​ (c)   . Thus, the symbol “2NaHCO₃” indicates ​ (d)   units of sodium bicarbonate, which contain 2 Na atoms, 2 H atoms, 2 C atoms, and 6 O atoms

(2 X 3= 6, the coefficient times the subscript for O).

• front

• coefficients

• two

• formula

What coefficients should be added to balance the equation?

• None, it's already balanced.

• 4C

• 4H₂

• 2H₂

Tags

NGSS.MS-PS1-5

Decide which coefficients should go in front of Al₂O₃ and O₂ in order to balance the equation.

• 2Al₂O₃ and 2O₂

• 2Al₂O₃ and 3O₂

• 4Al₂O₃ and 2O₂

Tags

NGSS.MS-PS1-5

What coefficients should be added to balance the equation?

• None, it's already balanced.

• 2BaCl₂

• 2H₂SO₄

• 2BaSO₄

• 2BaCl₂ AND 2BaSO₄

Tags

NGSS.MS-PS1-5

The red numbers in the image below represent ________

• subscripts

• coefficients

• I don't know, and don't want to try

• None of the answers are correct

Balance this equation:
 2Li + Cl₂ -> LiCl

• 2Li + Cl₂ -> 4LiCl2

• 2Li + Cl₂ -> LiCl₂

• 2Li + Cl₂ -> 2LiCl

Tags

NGSS.MS-PS1-5