Mrs. Wong find a mistake as she was grading Lola's paper. Each step should represent an equivalent expression. Which step shows the mistake that Mrs. Wong found?

> 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.

answersilicon (si); oxygen (o);

4d^55s^1 ( third choice)