Calculate the value of ? e in joules for a system that loses 115 j of heat and has 150 j of work performed on it by the surroundings.

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)