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- 1. Multiple ChoiceWhat coefficient should be used to make the following equation balanced?
N2+O2--> _NO1234 - 2. Multiple Choice
Which equation is balanced?
PbO2 + 2H2
SO2 + H20 --> H2SO4
2Na + 2H2O --> 2NaOH + H2
- 3. Multiple ChoiceHow many HCl molecules do you need to balance this equation?
Mg + __HCl ---> MgCl2 + H21234 - 4. Multiple Choice
What law governs the balancing of chemical equations?
Law of Energy
Law of Conservation of Matter/Mass
Law of Gravity
Law of Matter Movement
- 5. Multiple ChoiceWhat is the total number of atoms present in 5Na3PO4540558
- 6. Multiple Choice
Balance this equation
_Al +_HCl --> _H2 +_AlCl3
2,6,3,2
it's already balanced
4,12,3,4
2,1,4,5
- 7. Multiple Choice
What are the coefficients that would properly balance this equation?
__Ca + __H2O --> __Ca(OH)2 + __H2
2,1 --> 2,1
1,2 --> 1,1
1,2 --> 2,4
1,2 --> 2,1
- 8. Multiple ChoiceWhat is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CO + __Fe2O3--> __Fe + __CO23,1 --> 2,33,2 --> 1,13,2 --> 2,43,2 --> 2,1
- 9. Multiple Choice
What are the coefficients that would properly balance this equation?
__AgNO3 + __H2S --> __Ag2S+ __HNO3
2,1 --> 1,2
1,2 --> 1,1
1,2 --> 1,2
1,2 --> 2,1
- 10. Multiple Choice
What are the coefficients that would properly balance this equation?
__H2 + __S --> __H2S
1,1 --> 1
2,2 --> 2
1,2 --> 1
1,2 --> 2
- 11. Multiple Choice
What are the coefficients that would properly balance this equation?
__Al + __O2--> __Al2O3
4,1 --> 2
4,3 --> 4
3,4 --> 1
4,3 --> 2
- 12. Multiple ChoiceWhat is the total number of atoms present in 5Na3PO4540558
- 13. Multiple Choice
Determine the coefficients to make the following equation balanced?
__N2 + __O2--> __NO
1, 1, 1
1, 1, 2
2, 2, 2
1, 2, 2
- 14. Multiple Choice
Determine the coefficients to balance the equation.
__Al +__HCl --> __H2 +__AlCl3
2,6,3,2
it's already balanced
4,12,3,4
2,1,4,5
- 15. Multiple Choice
Balance the the following equation.
__Zn+__HCl -->__ZnCl2 +__H2
1,1,2,1
1,1,1,2
1,2,1,1
2,1,1,1
- 16. Multiple ChoiceWhich number should go in the blank?
Mn + _ HNO3 → Mn(NO3)2 + H21230 - 17. Multiple ChoiceWhich number should go in the blank?
Al(NO3)3 + _ NaOH -> Al(OH)3 + 3 NaNO31230 - 18. Multiple Choice
The numbers needed to balance the equation are:1, 1, 1, 21, 1, 2, 21, 1, 1, 12, 3, 1, 3 - 19. Multiple ChoiceThe numbers needed to balance the equation are:2, 7, 6, 42, 1, 3, 21, 1, 3, 22, 3, 1, 3
- 20. Multiple ChoiceThe numbers needed to balance the equation are:2, 7, 6, 42, 1, 3, 23, 1, 1, 32, 3, 1, 3
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