A sample of Br2(g)Br2(g) takes 38.0 min38.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g)Ar(g) to effuse through the same membrane

The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.

What are two radioactive isotopes that are used for dating rocks that are older than 10 million years

The process by which liquid water changes into water vapour is called what ?