HELP PLEASE ILL MARK BRAINLIEST

If i make a solution by adding 83grams of sodium hydroxide to 750ml i’d water what is the molarity of sodium hydroxide

In 2002, the rare earth elements mine in mountain pass, california was closed because

From the options provided for each element below, choose the properties that it may have based on its location in the periodic table fluorine (f): highly reactive nonmetal shiny a conductor