What is the scientific notation for 98.5

An electrons position cannot be known precisely only it's probability of being in a certain location can be known

  the mississippians were considered to be  horticulturalists, which means they were

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.