Which statement describes how an atom in the ground state becomes excited

Which of the dna typing techniques do you think you would choose if you had to analyze a dna sample? why?

Condensation happens when water vapor cools. true or false? ?

At a certain temperature the rate of this reaction is first order in hi with a rate constant of : 0.0632s2hig=h2g+i2g suppose a vessel contains hi at a concentration of 1.28m . calculate how long it takes for the concentration of hi to decrease to 17.0% of its initial value. you may assume no other reaction is important. round your answer to 2 significant digits.