Identify the correct practices when setting up the condenser for a reflux system. Select one or more:

Compare and contrast solutions and suspensions

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)

Is a chemical message sent by another individual.