When Steel wool was added to a blue colored CuCl2 solution, the color of solution gradually changed from blue to yellow. At the same time, there are some red solid covering the steel wool. What is the identity of the red solid on steel wool?

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?

Heat is the total potential energy of a substance that can be transferred. true false

Which of these is a density dependent factor? a. epidemic b. earthquake c. drought d. hurricane