What does the number 84 in the name krypton 84 represent

How many moles of al3+ ions are in 1.25 moles of al2o3

Building glycogen from glucose molecules is an example of

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.