Hello plz help thanks -_-

If 90.0 grams of ethane reacted with excess chlorine,how many grams of dicarbon hexachloride would form

What is the molar mass of a gas that has density of 2.054 g/l

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers