What defines an exothermic reaction? O A. A reaction that needs heat added
O B. A reaction that possesses enthalpy
O c. A reaction that relies on collisions
O D. A reaction that produces heat

How many moles of al3+ ions are in 1.25 moles of al2o3

What is the lowest number energy level where a d sublevel is found

Consider the reaction of a(g) + b(g) + c(g) => d(g) for which the following data were obtained: experiment initial [a], mol/l initial [b], mol/l initial [c], mol/l initial rate, mol/l. s 1 0.0500 0.0500 0.0100 6.25 x 10^-3 2 0.100 0.0500 0.0100 2.50 x 10^-2 3 0.100 0.100 0.0100 1.00 x 10^-1 4 0.0500 0.0500 0.0200 6.25 x 10^-3 what is the rate law for the reaction?