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Balancing of Chemical Equations

Last updated about 2 years ago

13 questions

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

1

Required

5

Required

3

Required

4

Question 1

1.

How many oxygens are there in H2O

0

3

2

1

Question 2

2.

How many oxygens are there in 2H2O

4

3

6

2

Question 3

3.

How many hydrogens are there in 2H2O

3

2

6

4

Question 4

4.

How many oxygens are there in 4(NO3)?

3

4

12

16

Question 5

5.

How many Aluminums are there in 3Al2O3?

6

3

8

5

Question 6

6.

How many hydrogens are there in Mg(OH)2 ?

4

2

1

3

Question 7

7.

OH is Hydroxide. How many hydroxides are there in Al(OH)3?

4

2

1

3

Question 8

8.

How many oxygens are there in: CO2 + H2O?

3

4

2

1

Question 9

9.

What number (coefficient) will balance this reaction? ___H2 + O2 → 2H2O

4

1

2

0

Question 10

10.

What coefficient would balance this reaction? 2Al + __ Br2 → 2AlBr3

2

5

4

3

Question 11

11.

Draggable item		Corresponding Item
2KClO3 → 2KCl + 3O2		combustion
2C3H7OH + 9O2 → 6CO2 + 8H2O

Question 12

12.

Balance this equation: __________Fe + __________O2 → __________Fe2O3

Question 13

13.

Balance this equation: __________Mg + __________H2O→ __________Mg(OH)2 + __________H2

synthesis

2H2 + O2 → 2H2O

double displacement

Mg + 2AgNO3 → Mg(NO3)2 + 2Ag

decomposition

NaS + ZnNO3 → NaNO3 + ZnS

single displacement