Fluorine gas is placed in contact with calcium metal at high temperatures to produce calcium fluoride powder. what is the formula equation for this reaction?

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)

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 molar mass of the anhydrous compound? answer using four significant figures. 36.02 g/mol 120.15 g/mol 156.12 g/mol