Why do you think we use asphalt and tars/waxes (heavier, thicker, higher boiling point fraction) in our roads and roof coatings? Why not use gasoline of diesel in a roof coating or road (what would it do, what is its problem)? b) Could you burn tar as a fuel in your car? If so, what would you have to do to it to make it work?

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?