Use uppercase for the first character in the element and lowercase for the second character. A chemical equation is a written description of what … The answer will appear below; Always use the upper case for the first character in the element name and the lower case for the second character. Write down your given equation. Examples: Fe, Au, Co, Br, C, O, N, F. Compare: Co - cobalt and CO - carbon monoxide Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored. The balanced equation will appear above. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. Instructions on balancing chemical equations: Enter an equation of a chemical reaction and click 'Balance'. Easy Steps for Balancing Chemical Equations. For this example, you will use: C3H8 + O2 --> H2O + CO2 This reaction occurs when propane (C3H8) is burned in the presence of oxygen to produce water and carbon dioxide.