The specific heat of water is 4.184 J/gºC, the specific heat of wood is 1.760 J/gºC, and the specific heat of coal is 1.26 J/gºC. Which of these materials requires the
most heat to raise its temperature by one degree Celsius?
A) Water
B) All materials need the same amount of energy.
C) Coal
OD) Wood

c is the answer because when something is left after something evaporates that shows the chemical change.

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.

what is the question here. i think you messed up.