3. Friction is a force that works of an object’s motion. a. regardless
b. in support
c. in the same direction
d. in the opposite direction

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 answer is 0.42 is that is an option. this question provides no info

im doing test rn im going with 2 but ill give answer if itss wrong,   : )