219 86 Rn —>215 84 Po+a The nuclear equation shows the transmutation of a form of radon into polonium and an alpha particle. In one to two sentences,

explain whether or not the reaction is balanced.

if you mean hydrogen and oxygen then water is the product

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.