Which liquid boils at a lower temperature than water?

The density of an unknown gas at 98°c and 740 mmhg is 2.50 g/l. what is the molar mass of the gas with work showed?

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

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