Balancing Chemical Equations

Which of these equations are balanced? 3Al+O2=4Al2O2 2Al+O2=Al2O2 7Al+2O2=9Al2O2

2Al+O2=Al2O2

Balance the following equation: Fe+O2=Fe2O3

4Fe+3O2=6Fe2O3

Is this equation balanced or unbalanced? U+3F2=UF6

Balanced

Carbon and 2 Oxygen atoms react to form carbon dioxide.

C+2O+CO2

Hydrogen and Chloride react to form hydrochloric acid.

H+Cl=HCl

Which of these equations are correctly balanced? 2N2+O2= 2NO 3N2+7O2=2NO N2+O2=2NO

N2+O2=2NO

Balance the following equation: H20+O2=H2O2

The correct answer is 2H2O2

Balance the following equation: H2O+C=CO3+H

The correct answer is 3H2O+C=CO3+6H

Is the following equation balanced or unbalanced? 2NaOH+H2SO4=Na2SO4+H2o

Unbalanced

Is this equation balanced or unbalanced? SO2+H2O=H2SO4

Unbalanced