When naoh is added to feso4 what our observation and inference

What term describes technology that operates on an atomic level

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)

What is the predicted change in the boiling point of water when 1.50 g of barium chloride is dissolved in 1.50 kg of water?