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- 1. Multiple ChoiceIs the equation balanced?: 2H2O + O2 --> 4MgO + 3FeYesNo
- 2. Multiple ChoiceBalance this equation
_Al +_HCl --> _H2 +_AlCl32, 6, 3, 2it is already balanced4, 12, 3, 42, 1, 4, 5 - 3. Multiple ChoiceBalance this equation-
__P4 + __O2 --> __P2O3it is already balanced2, 1, 31, 2, 31, 3, 2 - 4. Multiple ChoiceBalance this equation.
_CH4 + _O2 --> _CO2 + _H2O1,2,1,12,1,2,11,2,1,20,2,0,2 - 5. Multiple ChoiceBalance this equation.
_CF4 + _Br2 -- _CBr4 + _F22,1,2,11,2,2,11,2,1,22,2,2,2 - 6. Multiple ChoiceBalance this equation
_N2 + _H2 --> _NH31,2,31,3,21,1,22,1,1 - 7. Multiple ChoiceBalance this equation.
_Mg + _Cl2 --> _MgCl21, 2,1already balanced2,1,11,1,2 - 8. Multiple ChoiceBalance this equation.
_SnO2 +_H2-->_Sn +_H2O1,1,2,11,2,1,11,2,1,21,2,2,1 - 9. Multiple ChoiceBalance this equation-
_SeCl6+_O2>_SeO2+_Cl21,2,1,21,1,1,31,2,1,12,1,1,1 - 10. Multiple ChoiceBalance this equation
_Zn+_HCl-->_ZnCl2 +_H21,1,2,11,1,1,21,2,1,12,1,1,1 - 11. Multiple ChoiceBalance this equation.
_N2+_O2->_H2O+_HNO3not possible2,2,1,22,1,1,42,2,1,4 - 12. Multiple ChoiceWhat does the Law of Conservation of Mass state?Matter cannot be gained or lost in a chemical reaction.Matter can only be lost in a chemical reaction.Matter can only be gained in a chemical reaction.Matter can be gained and lost in a chemical reaction.
- 13. Multiple ChoiceWhat is the little number after an element in a chemical equation called.
Example: H2CoefficientSubscriptAtomEquation - 14. Multiple ChoiceWhen balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balancedchargesubscriptrandom numbercoefficient
- 15. Multiple ChoiceHow many atoms of aluminum are on each side of the following equation: 4Al + 3O2 --> 2Al2 O32614
- Answer choicesTagsAnswer choicesTags