the primary and secondary coolants in a nuclear power plant have very different but equally vital roles. label each type of coolant with its characteristics. some traits may not apply to either.

Acurium-245 nucleus is hit with a neutron and changes as shown by the equation. complete the equation by filling in the missing parts. 52

For ai it's atomic number is 13 and it's mass number is 27 how many neutrons does it have

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)