How many moles of nitrogen are contained in 18.65 l at stp?

What type of matter is made of only one kind of atom

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)

Which states of matter have particles that move independently of one another with very little attraction?