HURRR A nonmetal in the same group as Pb

organisms are more likely to be more preserved in mud than sand because mud is moist and wet, while sand is very dry.

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.