Give FOUR possible reasons why your yield of the CRUDE product is less than the theoretical yield. You can mention mechanical, losses, but if you do you have to be specific about exactly where the mechanical losses might be, and mechanical losses can only be TWO of your FOUR possible reasons.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

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)

Fred is studying a substance that is made out of only one element. this means that