The first known US drone strike against Al Qaeda operatives took place in Yemen on November 4, 2002. The attack, conducted by the CIA, took out a car carrying six suspected militants, including Abu Ali (a.k.a., Qaed Senyan al-Harthi), a former security guard for Osama bin Laden.
Boiling point is the temperature at which vapour pressure of liquid becomes equal to the atmospheric pressure. More is the vapour pressure lesser will be the heat require to raise its vapour pressure . So more is the vapour pressure lower is the boiling point .
More energy is needed to separate them than short chain molecules which have only weak forces of attraction for each other. QUES: Name some of the compounds in the table and state whether the compound will be a gas, liquid, or solid state at room temperature (20oC). Hint: If the boiling point is below 20oC, then the liquid has already boiled and is a gas. What is the the boiling point trend in terms of the molecular weights of the compounds? At room temperature, the lighter alkanes are gases; the midweight alkanes are liquids; and the heavier alkanes are solids, or tars.