Given the balanced equation representing a reaction:
br2 + energy ==> br + br
which statement describes the energy change and bonds in this reaction?
(1) energy is released as bonds are broken.
(2) energy is released as bonds are formed.
(3) energy is absorbed as bonds are broken.
(4) energy is absorbed as bonds are formed.

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.

Is powdered sports drink ionic or covalent ? 10pts !

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus.b) the number of neutrons it contains in its nucleus.c) the number of protons it has in a cloud around the nucleus.d) the number of neutrons it has in a cloud around the nucleus.e) the number of electrons it exchanges with its neighbors.