Reaction: 2CaCI2 + AI2O3 -> 3CaO + 2AICI3 How many moles of AI2O3 are needed to react completely with 2.5 moles of CaCI2?

Please show the work, it is not for a quiz so no need to rush. I just want to figure out how to solve this.

If 1.8 l of water is added to 2.5l of a 7.0 molarity koh solution, what is the molarity of the new solution

What are the similarities of physical and chemical change ?

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?