carbon dioxide is a major contributor to the greenhouse effect. A gallon of gasoline has a mass of 2700g. Presume that the gasoline is composed of octane, C8H18, and the only emission products are carbon dioxide and water. What mass of carbon dioxide is produced by the average car in a year? The average car uses 1 gallon of gas in 20 miles and travels about 12,000 miles a year. (SHOW ALL 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?