How is energy transferred during the water cycle

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.

Type the letter that represents the correct location for each particle type below. the neutron is found at __ the electron is found at __ the proton is found at __

Use the periodic table to classify each of the elements below. cadmium (cd): vanadium (v): xenon (xe): iodine (i): potassium (k): strontium (sr):