Asystem expands by 0.91m3 at a constant pressure
of 105 kpa.
(a) find the heat that flows into or out of
thesystem if its internal energy increases by 91 j.
(b) find the heat that flows into or out of the system if
itsinternal energy decreases by 1950j.

This is important 1. what happens to the speed of molecules in water vapor when it condenses to form a liquid? (2 points) the molecules slow down. the molecules speed up. the molecules slow down and then speed up. the molecules speed up and then slow down. 2. how might human activities change to compensate for a decrease in water supplies? (2 points) humans might build a factory. humans might build drainage systems. humans might extract more water from the ground. human behavior does not change because of the water cycle. i'll be grateful if anyone can answer these 2 questions !