Give the balanced equation for each of the following.

a. The combustion of ethanol \(\left(\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}ight)\) forms carbon dioxide and water vapor. A combustion reaction refers to a reaction of a substance with oxygen gas.

b. Aqueous solutions of lead(II) nitrate and sodium phosphate are mixed, resulting in the precipitate formation of lead(II) phosphate with aqueous sodium nitrate as the other product.