Plz answer properly i need mt grades to be up

Which step in naming unsaturated hydrocarbons is used for alkenes but not alkynes

Why are people not able to scuba dive in the deep part of the ocean

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.