3.45 kilometers = micrometers? 3,450,000,000 345,000 0.345 0.345

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.

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

Which is an example of a reversible physical change?