Sophia was studying the history of Earth and came across a geologic timeline. She noticed that the time scale was different in a more recently published book and wondered why it was different. Explain why the geologic time scale can change.

the answers would be

the first one and the second one

> 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.