Asubstance has a vapor pressure of 77.86 mm hg at 318.3 k and a vapor pressure of161.3 mmhg at 340. 7 k. calculate its heat of vaporization in kj/mol.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.