Which of these is a major drawback of using fuel cells in a car? a lack of hydrogen filling stations
a drop in reliance on petroleum products
an increase in water vapor into the atmosphere
an increase in the use of rechargeable batteries

i don,t know so just answer mine

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.