Acylinder 8 inches in diameter and 3 ft long is concentric with a pipe of 8.25 inches i. d. between cylinder and pipe there is an oil film. what force is required to move the cylinder along the pipe at a constant velocity of 3 fps

- measure reactants precisely. ( first choice)

- stir to the reaction take place. ( second choice)

- wait patiently until the reaction completes. ( fourth choice)

- make sure to recover as much copper as possible. ( last choice)

its c its is a mixture of gases

the answer would most likely be c, because if it's a comical piece of information, it may likely not be true, if it's a site that allows anybody to edit the content, it could mean a five year old is typing the info, and if it's a tv show produced by a celeb, it may have a biased opinion.