Dalton completing an investigation in the science lab he observes that a sample of liquid turns to gas at 135c what’s this temperature called?

Can someone me with questions 12 and 13 plz.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

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.