Which phrase best describes speed? A. Rate of change in velocity.

B. Rate of change in position to motion.

C. Total change in position as described by distance and direction.

D. Rate of motion.

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

> b takes place in the gas phase in an isothermal tubular reactor. the feed is one mole of a per one mole of c, an inert. the entering temperature and pressure are 427°c and 10 atm, respectively. the gas constant r = 0.08206 atm · l/mol · k.

answer///carbon;