It is responsible for the generation of earth’s magnetic field

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)

How many grams of phosphorus are contained in 5.09 moles of phosphorus?

Do polar molecules have ionic bonds?