In a classroom, which comparison would a teacher most likely use for describing a mole?

What is the relation between concentration of reactants and the rate of chemical reaction?

What happens when light is scattered?

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.