BaCl² produces barium gas plus chlorine gas when heated. what would be the combined mass of the barium and chlorine if 15 g of Barium chloride was heated​

Ithink this is what you meant. the temperature at which a liquid begins to boil is called the boiling point. the boiling point of water is 212°f or 100°c.  and at that point will start to turn into steam (gas)

Noble gases is far right