3. in which process do substances have to be in direct contact when heat moves
from areas of more heat to areas of less heat?
conduction
convection
radiation
none of the above

your answer would be “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.