DEMONSTRATING CONSERVATION OF MASS WITH BALANCED EQUATIONS

blank Zn + 2HCl = blank ZnCl2 + blank H2

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

Fe2O3 + 3H2 = 2Fe + 3H2O

Check the equations that are correctly balanced.

2 NH3 + 5F2 = blank N2F4 + 6 HF

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

2 PbO2 = 2 PbO + blank O2

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

4 Al + 3 O2 = O3

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

6 CO2 + 6 H2O = blank C6H12O6 + 6 O2

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

reactant

: one of the starting substances (ingredients) involved in a chemical reaction

product

: the substance yielded as a result of a chemical reaction

2 C2H6 + 7 O2 = 4 CO2 + 6 H2O

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

2 K + 2 H20 = blank H2 + 2 KOH

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

2 KNO3 = 2 KNO2 + blank O2

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

2 KOH + Cu(NO3)2 = 2 KNO3 + blank Cu(OH)2

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

2 Kl + blank Pb(NO3)2 = blank Pbl2 + 2 KNO3

Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coefficient is "1."

False

The equation below is correctly balanced. 6HgO = 3O2 + 6Hg