How many moles of ethylene (c2h4) can react with 12.9 liters of oxygen gas at 1.2 atmospheres and 297 kelvin? c2h4(g) + 3o2(g) yields 2co2(g) + 2h2o(g) 0.21 moles 0.32 moles 0.63 moles 0.84 moles

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?