Which of the following characteristics describes an acid? (Aks 4b)

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

An atom of which element reacts with an atom of hydrogen to form a bond with the greatest degree of polarity ?

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.