How many moles of ethyl alcohol, c2h6o, are in a 18.0 g sample?

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Geothermal energy for industrial use is available almost anywhere. a.true b.false

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)