Balancing Chemical Equations

Front

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)? __Na + __H₂O --> __NaOH + __H₂

Back

2,2 --> 2,1

Front

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)? __Ca + __H₂O --> __Ca(OH)₂ + __H₂

Back

1,2 --> 1,1

Front

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__CO + __Fe₂O₃--> __Fe + __CO₂

Back

3,1 --> 2,3

Front

Which problem is balanced? Options: PbO₂ + 2H₂--> H₂SO₄, SO₂ + H₂0 --> H₂SO₄, 2Na + 2H₂O --> 2NaOH + H₂, 2Na + 2H₂O --> 2NaOH + H

Back

2Na + 2H₂O --> 2NaOH + H₂

Front

Coefficient

Back

The large number to the left of a formula.

Front

Balance this equation.
_Mg + _Cl₂ --> _MgCl₂

Back

already balanced

Front

How many atoms of aluminum are on each side of the following equation: 4Al + 3O₂ --> 2Al₂ O₃

Back

4

Front

Number of H in 3(NH₄)₂CrO₄

Back

24

Front

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

Back

the mass is the same

Front

Balance this equation: Al₂O₃ --> Al + O₂

Back

2Al₂O₃ --> 4Al + 3O₂