3 Ba (s) + 2 CoBr3 (aq) --> 3 BaBr2 (aq) + 2 Co (s) Given the balanced equation above, calculate the moles of cobalt(III) bromide needed to react with 1.560 moles of barium atoms.

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)