At what temperature (in K) does a reaction start/stop being spontaneous under standard conditions if the reaction has a ΔH°rxn = +133.3 kJ/mol and ΔS°rxn = +121.6 J/(mol∙K)?

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —

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.

What are two radioactive isotopes that are used for dating rocks that are older than 10 million years