Please, could someone help me with a physics? The neck of the 0.78 l bottle was sealed with a rubber stopper. The air pressure in the closed bottle was 1.1 * 105 Pa and the temperature was 23 ° C. Determine the air pressure in the bottle after it has cooled to -13 ° C.

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.