When react with water, element A shows a mild explosion along with Hydrogen gases produced. Meanwhile, element B shows a spark of fire and duced less Hydrogen gases. Predict the position of element A and B in the periodic table using reactivity trends.​

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.

the correct answer would be b) volume versus temperature, because they are also directly proportional.